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07-03-2024
Biology

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Why are memory B-cells activated faster upon secondary exposure to antigen than the initial progenitor B-cell is upon primary exposure to antigen?
a) Memory B-cells have a higher affinity for antigens.
b) Memory B-cells are larger in size.
c) Memory B-cells lack the necessary receptors for antigen recognition.
d) Memory B-cells have a shorter lifespan than progenitor B-cells.

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