Biology / Unit 13 Bio 3279 short lesson, about 20 seconds
T Cell Types: Helper and Cytotoxic
Captions available
The idea
Helper T cells coordinate the adaptive response by signaling B cells and other immune cells; cytotoxic T cells directly destroy infected or abnormal cells they recognize.
In practice
Helper T cell signaling boosts both B cell antibody output and cytotoxic T cell activity.
Where people slip
Helper T cells coordinate but do not destroy infected cells themselves — that role belongs to cytotoxic T cells.
Your place on the trail
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