Question

cell - mediated immunity
● begins when a macrophage consumes a virus and displays an antigen on its
● helper t cells bind to
and are activated.
● helper t cells then divide
● divided helper t cells then activate
produce
● cytotoxic t cells bind to body cells and destroy them.
secondary response
the role of memory cells is to that pathogen in case it infects the body again. if the pathogen is encountered again, the
immune response is triggered. the response to the invasion of the same pathogen is quicker in the secondary response than in the primary response.

Explanation:

In cell - mediated immunity, macrophages display antigens on their cell surface. Helper T cells bind to the antigen - presenting macrophages. Activated helper T cells activate cytotoxic T cells which produce perforin and granzymes. Cytotoxic T cells bind to infected body cells. Memory cells recognize the pathogen for a faster secondary immune response.

Answer:

1. cell surface
2. the antigen - presenting macrophage
3. cytotoxic T cells; perforin and granzymes
4. infected
5. recognize; secondary