Following a mosquito bite, why does the adaptive immune response take several days to activate and resolve the localized inflammation, rather than providing immediate protection?

💡 Explanation

The adaptive immune response takes time because clonal selection of T and B cells is necessary. This process requires antigen-presenting cells to activate lymphocytes with specific receptors, leading to proliferation and differentiation; therefore, a delay occurs while the immune system identifies and amplifies the correct immune cells, rather than providing immediate antibody-mediated neutralization.

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