单词	perforin
释义	perforin /ˈpəːfərɪn / noun [mass noun] Biochemistry A protein, released by killer cells of the immune system, which destroys targeted cells by creating lesions like pores in their membranes.The CD8 cells of long-term nonprogressors produce more perforin than do CD8 cells of HIV-positive people who developed AIDS, the scientists found. Origin 1980s: from the verb perforate + -in1.
随便看	ecstasize ecstasy ecstatic ecstatically ECT ecto- ectoderm ectodermal ectogenesis ectomorph ectomorphic ectomorphy -ectomy ectoparasite ectoparasitic ectopic ectopic beat ectopic pregnancy ectoplasm ectoplasmic ectoproct Ectoprocta ectoproctous ectotherm ectothermic

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