Immune System

Immune System

1. First Line of Defences

   • Physical Barriers
   • Integumentary System
   • Epithelial Lining

2. Second Line of Defences

   • Internal, Non-specific Defences
     • Phagocytes
     • Immunological Surveillance
     • Interferons
     • Complement
     • Inflammation
     • Fever

3. Third Line of Defences

   • Internal, Specific Defences
     • Cell Mediated
       • T Cells
     • Antibody Mediated
       • B cells