Fig. 3From: Theranostic nanoplatforms of emodin-chitosan with blue laser light on enhancing the anti-biofilm activity of photodynamic therapy against Streptococcus mutans biofilms on the enamel surfacea Field emission scanning electron microscopy (FESEM) image of emodin-chitosan-nanoparticles, Scale bar = 100 nm; b Transmission electron microscopy (TEM) micrograph of emodin-chitosan-nanoparticles. Scale bar = 50 nmBack to article page