The vast reddish desert that covers much of Somalia's central Mudug region has always been a source of wealth, as well as calamity, for thousands of pastoral families.
VOA: standard.2009.10.06
It's this - its cells in this region here, this inner cell mass that that's the source of embryonic stem cells, cells from inner cell mass here.
就是这个,在这片区域的胚胎细胞,即内细胞群,而胚胎干细胞的来源所在,就是源自这里的内细胞群
应用推荐