The colonies of HPP CFC were supported by IL 1,IL 6, WEHI 3 conditioned medium (WEHI 3 CM, which contained IL 3) and L929 conditioned medium (L929 CM,which contained M CSF); the colonies of CFU GM were supported by WEHI 3 CM.

• HPP－CFC集落由IL－1、IL－6、WEHI3条件培养液（WEHI3－CM，含有IL－3）及L929条件培养液（L929－CM，含有M－CSF）所支持，而CFU－GM由WEHI3－CM所支持。