Fig. 6
From: Nano based drug delivery systems: recent developments and future prospects
(the figure is reproduced from Chang et al. [232] with required copyright permission)
a Structure of berberine/heparin based nanoparticles and berberine/heparin/chitosan nanoparticles. b TEM images of the berberine/heparin nanoparticles and berberine/heparin/chitosan nanoparticles