Slide 1The Immune System Nonspecific and Specific Defense You do not need to write down anything in blue. Slide 2 What is a pathogen? Pathogen: disease causing agent Pathogen:…
IB-202 4-29-05 The Bodyâs Defenses CHAPTER 47 ANIMAL DEVELOPMENT Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section B: The Cellular and…