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The immune response

From phagocytosis to memory cells on one map. Follow an antigen from a pathogen to antibodies and killer cells. Pick your exam board for its wording, then quiz yourself or try an exam question.

The immune response A pathogen, phagocytes and antigen-presenting cells on the left; T helper cells, T killer cells, infected cells and memory T cells in the middle; B cells, plasma cells, memory B cells and antibodies on the right. Arrows show engulfing and presenting, activating, dividing, producing and destroying, coloured by type. The same steps are listed as a table below the map.
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Every step on the map

The same steps as the map, as a list, in the wording of the board you picked. Use it to revise, or print this page.

Primary and secondary responses