Fig. 5. Representative micrographs of the gastric tissues labeled with (A) tyrosine hydroxylase (TH), (B) vasoactive intestinal peptide (VIP), and (C) neuronal nitric oxide synthase (nNOS), where brown-stained regions (arrow) indicate the positive immunoreactivities. TH immunoreactivity was observed in the myenteric/submucosal plexuses and glandular structures, VIP immunoreactivity was more distinct in epithelial linings and myenteric plexus, while nNOS immunoreactivity was detected mainly in the myenteric nerve plexus of the stomach. Bars showing 50 μm and 20 μm (insets).
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