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公开(公告)号:US20200277570A1
公开(公告)日:2020-09-03
申请号:US16604881
申请日:2018-04-11
IPC分类号: C12N5/0793 , C12N15/86 , A61K38/18
摘要: A method of altering cells comprising culturing them in a growth factor gradient, wherein said gradient is provided by a polyhedra delivery system (PODS) that releases the growth factor to set up the gradient.