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Innate Immunity: The Body’s First Line of Defense

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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

Phagoctytosis

Natural Killer Cells

Pattern Recognition Receptors (PRRs)

Introduction to the Complement System

Introduction to Immunity

The Human Microbiome