Spec included:
Explain the role of the specific immune system of the human body in defence against disease [5.13]

• exposure to pathogen
• the antigens trigger an immune response which causes the production of antibodies
• the antigens also trigger production of memory lymphocytes
• the role of memory lymphocytes in the secondary response to the antigen

Explain the body’s response to immunisation using an inactive form of a pathogen [5.14]