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 pri·on /ˈpriˌɑn/

 pri·on /ˈprɪˌɑn/ 名詞
 蛋白黴傳染性因子,蛋白黴感染性初級子,蛋白感染素(僅由蛋白質構成的感染物)

 prion
      n : (microbiology) an infectious protein particle similar to a
          virus but lacking nucleic acid; thought to be the agent
          responsible for scrapie and other degenerative diseases
          of the nervous system