Essentials of Biology Sylvia S. Mader Chapter 26 Lecture Outline Prepared by: Dr. Stephen Ebbs Southern Illinois University Carbondale Copyright © The.
1 Chapter 21: Immune System. 2 INTRODUCTION The immune system protects against assaults on the body –External assaults include microorganisms: protozoans,
Chapter 21: Immune System
Immunity Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
