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Immunofluorescence. Oral keratinocyte progenitor cells at 14 days expressed different stem- and differentiation markers (nuclei stained with DAPI); original magnification (x40). p63 - a specific oral keratinocyte stem cells marker; CK14 - differentiation marker usually positive for keratinocytes found in the basal layers of the epithelia; CK10 - differentiation marker expressed on cells found in the upper layers of the oral epithelia
