ahlam1399
03-06-2016, 04:00 PM
Think you've gone gray from stress? Scientists say they've identified the first gene for gray hair. It accounts for about 30 percent of grays, mostly in lighter colored hair.
أكثر... (http://www.npr.org/2016/03/06/469383340/scientists-find-a-genetic-culprit-for-gray-hair?utm_medium=RSS&utm_campaign=news)
أكثر... (http://www.npr.org/2016/03/06/469383340/scientists-find-a-genetic-culprit-for-gray-hair?utm_medium=RSS&utm_campaign=news)