The increase in the reactionof an organism or cell to an antigen to whichit has been previously exposed.It may occurnaturally or be artificially induced,e.g. fol-lowing vaccination.生物或细胞对先前接触过的抗原表现出的反应敏感性的提高。它可自然发生或人工诱导,例如接......(本文共 202 字) [阅读本文] >>


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