天堂在线观看视频无码_av无码免费福利_最好看的最新的中文字幕1_二区三区国产野外无码理论片 亚洲激情在线观看,久久99国产伦子精品免费,99久久国产免费福利,亚洲国产动漫日韩精品一区

One-Fifth of Human Genes Have Been Patented

October 17, 2005
A new study shows that 20 percent of human genes have been patented in the United States, primarily by private firms and universities.

　

Keywords