Fig. 3From: Metformin regulates atrial SK2 and SK3 expression through inhibiting the PKC/ERK signaling pathway in type 2 diabetic ratsTypical images of immunohistochemistry [SK2 (a), and SK3 (b)] in the atria of rats from the Con, DM, Met, PMA, and EGF groups. SK2 and SK3 were stained brownish yellow, and the nuclei were stained blue. The intensity of the brownish yellow color represents the SK2 and SK3 expression levels (scale bar = 50 μm)Back to article page