Can you hear me OK? nizagara review Not only were there changes in the abundance of different bacteria, but there were changes in the kinds of genes that they were expressing and their activity, said study author Lawrence David, an assistant professor at the Institute for Genome Sciences and Policy at Duke University. 必須 2000文字以内 [bbs:youtube:(Youtubeの動画ID)]と書くとYoutubeの動画が貼れます。(例:[bbs:youtube:OQThUAQ0UN0])