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Antigens trigger a specific response

Antigens trigger a specific response

An antigen is a molecule on the surface of a pathogen that the immune system recognises as foreign. Different pathogens have different antigens.

5.3.1 The specific immune system Lesson

  1. GCSE
  2. /Biology
  3. /5.3.1 The specific immune system

Step-by-step lessons on Edexcel GCSE Biology 5.3.1 The specific immune system. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons