Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 3A
A positive tuberculin skin test shows cellular immunity to Mycobacterium tuberculosis. How could a person acquire this immunity?
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Chapter 17 Solutions
Microbiology: An Introduction
Ch. 17 - Contrast the terms in the following pairs: a....Ch. 17 - What does MHC stand for? What is the function of...Ch. 17 - Why is dietary protein deficiency associated with...Ch. 17 - Prob. 4RCh. 17 - Prob. 5RCh. 17 - DRAW IT a. In the graph below, at time A the host...Ch. 17 - How would each of the following prevent infection?...Ch. 17 - Prob. 8RCh. 17 - Explain why a person who recovers from a disease...Ch. 17 - Prob. 10R
Ch. 17 - Prob. 1MCQCh. 17 - The type of protection provided by the injection...Ch. 17 - Prob. 3MCQCh. 17 - Prob. 4MCQCh. 17 - Prob. 5MCQCh. 17 - Prob. 6MCQCh. 17 - Prob. 7MCQCh. 17 - Prob. 8MCQCh. 17 - Prob. 9MCQCh. 17 - Prob. 10MCQCh. 17 - Prob. 1ACh. 17 - Why is dietary protein deficiency associated with...Ch. 17 - A positive tuberculin skin test shows cellular...Ch. 17 - On her vacation to Australia, Janet was bitten by...Ch. 17 - Prob. 1CAECh. 17 - Prob. 2CAECh. 17 - A patient with chronic diarrhea was found to lack...Ch. 17 - Newborns (under 1 year) who contract dengue have a...
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- How might IRA B cells prevent bacterial sepsis?arrow_forwardin some of the world a tuberculosis vaccine known as bacillus calmette guerin bcg is used. it is not used in the united states. every person who has received this vaccine and mounted a protective response will have a positive reaction in a tuberculin skin test. why? what does this mean for the usefulness of this skin test in those countries where this vaccine is used?arrow_forwardBased on what you know about the cells of the immune system, do you suspect this patient to have an infection, and if so, what is a probable cause? Choose the best answer and explain. a) Yes, a possible viral infection is indicated. b) Yes, a possible fungal infection is indicated. c) Yes, a possible bacterial infection is indicated. d) No, an infection is not indicated.arrow_forward
- A 3-year-old child has a history of serious infections and is currently hospitalized with meningitis. The doctor suspects that he may have a complement deficiency and orders testing. A buffer that chelates calcium was added to specimen. There was a decrease radial haemolysis on agarose plate a) Which complement pathway accounted for the result obtained and how will the result be reported in terms of hemolysis at 50 %? b) What is hydrodynamic focusing and why is it an important feature of an instrument.arrow_forwardDescrAnaphylactic shock is seen a person who produced a large amount of IgE than the person who produced IgG.arrow_forwardWhat is wrong with this statement: “Prior to vaccination, the patient’s skin was sterilized with alcohol’’? What would be the more correct wording?arrow_forward
- Describe an immunodeficiency that a person could have that would cause the immune system to select the incorrect immune response to Mycobacterium leprae.What gene would be mutated and how would this alter the immune response to this pathogen?arrow_forward A 27-year-old man has had a fever and cough for four months . Auscultation of the chest discloses crepitant crackles confined to the apex that persist despite coughing. An x-ray off the chest shows enlarged hilar lymph nodes. Acid fast stain of the sputum is positive. Which of the following characterizes the cellular host reaction? A) Humoral antibody formation of B lymphocytes B) interferon gamma production by CD4 T lymphocytes C) interferon gamma production by CD8 T lymphocytes D) macrophage lysis by B lymphocytes E) macrophage lysis by CD4 T lymphocytes arrow_forwardWhat is the characteristic lesion of erythema multiforme?arrow_forward
- What component must have been present in the positive control solution (antigen, anti-HIV IgG antibodies, or secondary antibody)? Explain how you know this is true.arrow_forwardHow do host immune systems recognize microbial invasion? You can focus on a Gram (-) bacterial infection. How does the immune system respond to the bacterial pathogen in the first 3-6 hours?arrow_forwardWhich form of acquired immunity is the patient developing by having this infection? A) Active natural immunity B) Passive natural immunity C) Active artificial immunity D) Passive artificial immunityarrow_forward
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