BACKGROUND: In previous studies, mesenchymal stem cells are harvested from fresh amniotic membrane.With regard to domain and time limitations, how to keep amniotic membrane is a practical problem.

• 背景：以往利用羊膜提取间充质干细胞的研究多将注意力放在新鲜的羊膜标本上，由于地域和时间的限制，对羊膜进行保存是必须面对的实际问题。