Which immune cells are activated by antigen presentation via MHC molecules?

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Multiple Choice

Which immune cells are activated by antigen presentation via MHC molecules?

Explanation:
Antigen presentation on MHC molecules activates T cells. Antigen-presenting cells display peptide fragments on MHC I or MHC II molecules. T cells have receptors that specifically recognize these peptide–MHC complexes, and with the necessary co-stimulatory signals, they become activated and proliferate into helper or cytotoxic T cells. MHC I mainly activates CD8+ cytotoxic T cells, which target infected cells, while MHC II activates CD4+ helper T cells, which coordinate the overall immune response. Other cells like B cells, neutrophils, or eosinophils aren’t activated primarily by recognizing peptide–MHC complexes.

Antigen presentation on MHC molecules activates T cells. Antigen-presenting cells display peptide fragments on MHC I or MHC II molecules. T cells have receptors that specifically recognize these peptide–MHC complexes, and with the necessary co-stimulatory signals, they become activated and proliferate into helper or cytotoxic T cells. MHC I mainly activates CD8+ cytotoxic T cells, which target infected cells, while MHC II activates CD4+ helper T cells, which coordinate the overall immune response. Other cells like B cells, neutrophils, or eosinophils aren’t activated primarily by recognizing peptide–MHC complexes.

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