Fig. 4From: In vitro physiological and antibacterial characterization of ZnO nanoparticle composites in simulated porcine gastric and enteric fluidsSEM micrographs of the morphology of microparticles. a ZnO nano, b ZnO with CH, SA and TPP sample (ZnO/CAT), c ZnO with CH and SA sample (ZnO/CA) and d commercial ZnOBack to article page