Fig. 4From: Optimization and in vitro antiproliferation of Curcuma wenyujin’s active extracts by ultrasonication and response surface methodologyFESEM images of raw and treated materials under different extraction conditions. a Raw materials; b Ultrasonic extraction 8 min; c Ultrasonic extraction 20 min; d SD extraction 20 min; e Maceration extraction 20 min; f SD extraction 1 h and g Maceration extraction 2 hBack to article page