<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
          Make me your Homepage
          left corner left corner
          China Daily Website

          Virgins vital for virus study, hospital says

          Updated: 2013-09-13 16:54
          By Huang Zhiling ( chinadaily.com.cn)

          Responding to inquiries why only virgin students were wanted in a medical study, a member of the research team at the Tumor Hospital of Peking University said that it was in line with internationally accepted norms, according to the Beijing News.

          An online post on Wednesday by the hospital sought to recruit 100 virgin students, aged between 18 and 24, for medical research. Each of the students will provide 3 to 5 milliliters of venous blood as part of a program to study the human papillomavirus. Each donor will receive 150 yuan ($24).

          Some netizens were puzzled why only virgins seemed suitable.

          A researcher, surnamed Liu, replied that the team needs virgins because of the low incidence rate among this group of the human papillomavirus, she told the Beijing News.

          "The team has collected more than 50 samples," she said.

          The post was deleted on Thursday evening, Beijing News said.

           
          ...
          Hot Topics
          A sailor from British Royal Navy destroyer HMS Daring tries to catch a mooring line to dock in the north side of the bund at Huangpu River in Shanghai December 10, 2013.
          ...
          ...
          主站蜘蛛池模板: 国产乱子伦一区二区三区视频播放| 日韩少妇人妻vs中文字幕| 在线中文字幕人妻视频| 免费人妻无码不卡中文18禁| 久久精品这里只有国产中文精品 | 伊人久久大香线蕉av网| 熟妇人妻久久精品一区二区| 九九热精彩视频在线免费| 久久se精品一区精品二区国产| 尤物视频色版在线观看| 欧美日韩视频综合一区无弹窗| 无码国产偷倩在线播放| 色婷婷五月在线精品视频| 午夜精品福利亚洲国产| 青春草在线观看播放网站| 国产熟女一区二区三区蜜臀| 色老头亚洲成人免费影院| 亚洲人成线无码7777| 国产不卡精品视频男人的天堂| 亚洲乱亚洲乱妇| 久久久久久综合网天天| 亚洲第一色网站| 自拍偷在线精品自拍偷免费| 精品尤物TV福利院在线网站| 久热视频这里只有精品6| 亚洲av网一区天堂福利| 2019香蕉在线观看直播视频| 国产精品亚洲А∨天堂免| 狠狠色丁香婷婷综合尤物| 四虎亚洲精品高清在线观看| 日本视频精品一区二区| 五月综合激情婷婷六月| 99在线国内在线视频22| 日本一区二区三区18岁| 欧洲国产成人久久精品综合 | 男人深夜影院无码观看| 中国女人内谢69xxxx| 亚洲国产精品区一区二区| 四虎成人精品永久网站| 好吊妞| 国产精品毛片久久久久久l|