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Chapter 21: The Immune System – Innate and Adaptive Body Defenses

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Introduction to the Immune System

Introduction to Innate Immunity

Introduction to First-Line Defenses

Physical Barriers in First-Line Defenses: Skin

Physical Barriers in First-Line Defenses: Mucous Membrane

First-Line Defenses: Chemical Barriers

Introduction to Innate Immunity

Introduction to Adaptive Immunity

Antigens

Introduction to T Lymphocytes

Introduction to B Lymphocytes