Moreover, CD90+ cells isolated from gliomas, lung, esophageal squamous cell carcinomas, and gastric cancers were able to regenerate and grow as a spheroid’s in vitro serum free media (Kang and Kang, 2007; He et al., 2012; Jiang et al., 2012; Tang et al., 2013; Wang P. et al., 2013). Here, THY1 is linked to esophageal squamous cell carcinoma.