Fig. 1From: Betulinic acid shows anticancer activity against equine melanoma cells and permeates isolated equine skin in vitroVerification of dermal fibroblasts (PriFi1 and PriFi2) isolated from the skin of two different horses. a Phase contrast microscopy of primary equine dermal fibroblasts PriFi1 and PriFi2. Cells show a typical spindle-shaped morphology. × 10 magnification. b Positive fluorescence microscopy detection of intermediate filament vimentin (red fluorescence) in PriFi1 and PriFi2. × 20 magnification, 546 nmBack to article page