Fig. 1From: Food-grade titanium dioxide and zinc oxide nanoparticles induce toxicity and cardiac damage after oral exposure in ratsThe primary size and shape of E171 and ZnO NPs obtained by TEM. E171 and ZnO NPs were suspended in bi-distilled water and 50 µL drop was analyzed in an electronic transmission microscope JEOL 10–10. Images are shown at direct magnification between 60,000 and 150000xBack to article page