ahlam1399
05-04-2016, 10:16 PM
Scientists have been able to keep human embryos alive twice as long as before. The technique is reopening a debate over a rule limiting research on human embryos to 14 days.
أكثر... (http://www.npr.org/sections/health-shots/2016/05/04/476539552/advance-in-human-embryo-research-rekindles-ethical-debate?utm_medium=RSS&utm_campaign=news)
أكثر... (http://www.npr.org/sections/health-shots/2016/05/04/476539552/advance-in-human-embryo-research-rekindles-ethical-debate?utm_medium=RSS&utm_campaign=news)