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. 2020 Aug 13;7:514. doi: 10.3389/fvets.2020.00514

Figure 1.

Figure 1

Photomicrographs of cryosections of a cat pylorus (a–i) showing angiotensin-converting enzyme 2 immunoreactivity (ACE2-IR) in the gastric mucosa (a–c), myenteric plexus (MP) neurons (d–f) and blood vessels (g–i). (a–c) Moderate ACE2-IR was expressed by the mucosal epithelial cells (open arrow) and secretory cells of the pyloric glands (white arrow). (d–f) White stars indicate two MP neurons expressing bright ACE2-IR which were also immunolabeled for the pan-neuronal marker HuC/HuD. Open stars indicate three MP neurons showing weak ACE2-IR. The smooth muscle cells of the tunica muscularis also showed moderate ACE2-IR as seen in the circular muscle layer (CML). (g–i) The smooth muscle cells (open arrows) of the blood vessels showed moderate ACE2-IR whereas ACE2-IR was undetectable in the endothelial cells (white arrows). Bar: 100 μm.