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Ccnd1 deficiency does not affect germ cell number. (A) Oct4::GFP transgenic M19 wild-type (WT) and M19 Ccnd1 homozygous knockout (KO) embryonic testes were sectioned and Oct4::GFP-positive germ cells were counted (E13.5, E14.5, E15.5). Data are plotted as the number of Oct4::GFP-positive germ cells ± SEM (n = 4-14). (B) Confocal microscopy images of E15.5 Oct4::GFP transgenic testes from M19-Ccnd1 WT and KO embryos. Scale bar: 50 μm.
