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Proliferation and Differentiation markers. Ki-67, filaggrin and involucrin stainings of healthy substitutes cultured with (HS+S) or without (HS−S) serum, psoriatic substitutes cultured with (HS+S) or without (HS−S) serum; scale bar=100 µm. The results were confirmed with 3 experiments (total of six samples for each condition). Nuclei were stained with Hoechst. (Magnification×10). Percentage of positive Ki-67 cells are presented as mean±SD.
