Biology / Unit 13 Bio 3287 short lesson, about 20 seconds
Immunological Memory
Captions available
The idea
Memory B and T cells, generated during clonal selection, per Bio 3277, persist long after infection clears, allowing a faster, stronger response if the antigen reappears.
In practice
A second exposure typically produces milder symptoms, or none, compared with the first.
Where people slip
Memory is antigen-specific — memory against one pathogen gives no protection against an unrelated one.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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