EBK BIOLOGY
EBK BIOLOGY
6th Edition
ISBN: 8220106777640
Author: Maier
Publisher: PEARSON
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Chapter 21, Problem 10LTB
Summary Introduction

Introduction:

The second line of defense can be defined as the nonspecific resistance that eliminates the pathogenic invaders in a usual way. If the pathogens pass the first line of defense such as through a cut in the skin, the infection progresses. In that case, the second line of defense plays its role to protect the body.

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