Fig. 7From: Anti-acne effects of Castanea crenata bur extract and identification of active compoundEllagic acid suppressed sebum production induced by PA in sebocytes. Sebocytes treated PA with or without ellagic acid and incubated for 48 h. Sebum accumulation was detected by Nile red staining and sebum droplets were observed by fluorescence microscopy. Scale bar is 100 µm. The fluorescence intensity of the droplets was measured using ImageJ (n = 3). The data are presented as the mean ± SD, *P < 0.05 compared to the control groupBack to article page