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EC cells acquire features of primed pluripotency and downregulate features of naïve pluripotency. (A,B) Representative confocal microscopy images of E15.5, E16.5 and E18.5 Oct4ΔPE::GFP transgenic M19 gonads sectioned and immunostained for OTX2 and (A) DAZL or (B) DNMT3L. EC cell foci are outlined. Scale bars: 25 μm. See also Figs S7 and S10.
