1. A vaccine prepared from the cowpox virus and inoculated against smallpox. 
   牛痘苗从牛痘毒素提取的用来预防天花的疫苗
2. Any of a group of DNA-containing viruses, including those that cause smallpox, cowpox, and other poxlike diseases in vertebrates. 
   痘病毒一组含脱氧核糖核酸的病毒，包括那些在脊椎动物中引起天花、牛痘以及其他类似疾病的病毒
3. British physician and vaccination pioneer. He found that smallpox could be prevented by inoculation with the substance from cowpox lesions. 
   詹纳，爱德华1749－1823英国内科医生和牛痘接种法创始人。他发现天花可以通过接种牛痘来预防

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• 1. 牛痘
  cowperitis 尿道球腺炎...cowpox 牛痘...cowpox virus 牛痘病毒
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