Principles of Biology
Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 40.4, Problem 1TYK
Summary Introduction

Introduction:

When the body’s immune system responds to a foreign substance that is not harmful, it is termed as an allergy. The foreign bodies are called allergens which could be pollen, foods, or dust.

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