Helper T cell

A) Quick and responsive to antigen, remembers previous exposure
B) After activation, differentiates to become plasma cell or memory B cell
C) Produces antibodies
D) Destroys cells by lysis or by production of cytokines
E) Activates B and effector T cells

Helper T Cell

Subset of T lymphocytes that increases the activity of B cells and T cells.

Cytokines

Small proteins released by cells, especially in the immune system, that have a specific effect on interactions and communications between cells.

Effector T Cells

A type of T cell that actively responds to a pathogen by directly killing infected host cells or by signaling other immune responses.