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Induced trophoblast progenitor (iTP) cells established from human fibroblasts. (A) Human fetal fibroblasts (IMR90). (B) iTP1 cell line generated from IMR90 after transduction with 5 viral genes (CDX2, EOMES, ELF5, C-MYC and KLF4). (C) Expression of CK7 in iTP cells. The original picture is 200×.
