Fig. 6.

The microscopic findings of immunized monkeys collected tissues (heart, liver, brain, lung, kidney, and skin). A: Dense connective tissue with elastic fibers was present in the cardiac/fibrous skeleton. Cardiomyocytes were normal and branched, contained intercalated disks, and were mononucleated. B: Fat vacuoles were seen in the hepatocytes' cytoplasm. Some sinusoids and central veins were congested but portal tracts were seen in normal condition. There was no increase in Kupffer cells and inflammation or dilation of sinusoids. C: No inflammation in meninges and neutrophils was observed. Molecular, granular, and pyramidal layers were intact and no neuron degeneration was noticed. D: No lesion in peribronchial and interalveolar spaces were seen. E: There was no evidence regarding inflammatory cells infiltration and no other lesion was noticed. F: Stratified squamous epithelium was intact with a thin layer of stratum corneum. Irregular dense connective tissue in the dermis layer with hair follicles and no inflammation, congestion, hyperemia, swelling, or other disorders were noticed.