Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi , archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

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Answer 1

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 21, Problem 1M

1.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

2.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

3.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

4.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

5.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

6.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

7.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

8.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

9.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

10.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, and archaea are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

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Answer 2

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 21, Problem 1M

1.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

2.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

3.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

4.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

5.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

6.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

7.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

8.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

9.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

10.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, and archaea are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

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Answer 3

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 21, Problem 1M

1.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

2.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

3.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

4.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

5.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

6.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

7.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

8.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

9.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

10.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, and archaea are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

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Answer 4

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 21, Problem 1M

1.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

2.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

3.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

4.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

5.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

6.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

7.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

8.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

9.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

10.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, and archaea are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

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Answer 5

Chapter 21, Problem 1M

1.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

2.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

3.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

4.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

5.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

6.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

7.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

8.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

9.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

10.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, and archaea are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 6

Chapter 21, Problem 1M

1.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 7

Chapter 21, Problem 1M

1.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 8

2.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 9

2.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 10

3.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 11

3.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 12

4.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 13

4.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 14

5.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 15

5.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 16

6.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 17

6.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 18

7.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 19

7.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 20

8.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 21

8.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 22

9.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 23

9.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, archaea, and protists are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 24

10.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, and archaea are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 25

10.

Summary Introduction

Concept Introduction:

Microorganisms are small microscopic living organisms which are so small that they cannot be seen with unaided eyes. Viruses, bacteria, fungi, and archaea are included in microorganisms. The microorganisms can be parasitic or free-living. Most of the microorganisms cause diseases in other living organisms.

Answer 26

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Answer 27

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Answer 28

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Answer 29

Ch. 21 - Bacteria infecting the mouth can enter the blood...Ch. 21 - Prob. 1CCS Ch. 21 - Nightmare on the Island Peggy loves her time on...Ch. 21 - Prob. 2TMW Ch. 21 - Prob. 3CCS Ch. 21 - Prob. 4CCS Ch. 21 - Prob. 3TMW Ch. 21 - Prob. 1EDCS Ch. 21 - Why can people who avoid cats get infected by...Ch. 21 - Prob. 5CCS

Solution Summary: The author explains that microorganisms are small microscopic living organisms that cannot be seen with unaided eyes. The bacterial endocarditis is caused by bacteria Streptococcus.

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