BiologyCode 9700
The immune system
What this topic asks you to be able to do
- describe, for phagocytes (neutrophils and macrophages), their mode of action
- explain the meaning of the word antigen (see 4.1.3), and state how self antigens differ from non-self antigens
- describe what happens, step by step, in a primary immune response, referring to the parts played by: macrophages; B-lymphocytes, including plasma cells; T-lymphocytes, limited to T-helper cells and T-killer cells
- explain what memory cells do that makes a secondary immune response possible and gives long-term immunity