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Immunofluorescence of male germ cell markers, DDX4, c-Kit and SSEA4 in differentiated human Wharton’s jelly Mesenchymal Stem Cells (hWJ-MSCs) treated with BMP4 + retinoic acid 21 days post induction. Nuclei were stained with DAPI (4´, 6´-diamidino-2-phenylindole) staining. Magnification; 100X
