B3.2 The immune system

The white blood cells then produce antibodies to match the shape of the antigens (unique shape molecules on the surface of cells).

Specific lymphocytes to grow, multiply and finally produce antibodies that will stick to the antigens on the invading pathogens and destroy them.

Phagocytes ingest pathogens and digest them. They also ingest pathogens which have been destroyed by antibodies.

A brief review of what you need to know about the human defence system.