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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	osmosis osmotherapy osmotic osmotically osmotic pressure osmotic shock osmoticum osmotolerant osmunda osmundaceous osmundine Osnabrück osnaburg OSO osoberry osone osophy os orbiculare osotogari o soto gari o-soto gari o-soto-gari os penis osphradium osphresiology

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。