配方基于发表的两篇文献，点击可下载文献原文
•Sato et al. Single Lgr5 stem cells buildcrypt-villus structures in vitro without a mesenchymal niche Nature. 2009 May 14;459(7244):262-5.
•Sato et al. Paneth cells constitute theniche for Lgr5 stem cells in intestinal crypts, Nature. 2011 Jan20;469(7330):415-8.
