Antigen Recognition- Innate Vs. Adaptive

Antigen Recognition- Innate Vs. Adaptive

1. Innate

   • Pathogens are recognised by receptors encoded in the germline
     • Pattern Recognition Receptors
   • Receptors have broad specificity
     • Recognise Pathogen Associated Molecular Patterns
   • Immediate Response
   • No memory of prior exposure

2. Adaptive

   • Pathogen recognised by randomly generated receptors encoded after birth
     • T Cell/B Cell Receptors
   • Receptors have a very narrow specificity
     • Recognise specific antigens
   • Slow response (3-5 days)
   • Retains memory of prior exposure