BIOLOGY - LOOSELEAF TEXT ONLY
BIOLOGY - LOOSELEAF TEXT ONLY
14th Edition
ISBN: 9781266343445
Author: Mader
Publisher: MCG
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Chapter 33.3, Problem 1CYP
Summary Introduction

To enlist:

The three types of physical barriers and three types of chemical barriers.

Introduction:

Physical and chemical barriers are under the body first line of defense which prevents the body from infection and foreign particles. Innate immune defenses in our body include the physical and chemical barriers which are fully functional and occur very shortly after an infection.

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Nitrogen emissions: environmental and health hazards; Author: Sandec Eawag;https://www.youtube.com/watch?v=iYcchHZ5Ejo;License: Standard Youtube License