alloreactivityWiktionary 原文构词拆分allo-前缀(biology, medicine) Nonself; nonself but of the same species. · External, outside, or from a separate location.+reactivity词根/词干词源说明From allo- + reactivity.释义（英文）名词 Noun(cytology, immunology) The reaction of a lymphocyte or antibody with an alloantigen.