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Photomicrographs of (a) turbinate, (b) palatine tonsil, (c) lung, and (d) kidney from calves experimentally inoculated with SARS-CoV-2 and examined 9 days later. In both turbinate and tonsil, sparse labeling for ACE2 receptor is seen, associated with submucosal glands (arrows). Sparse labeling is also noted in lung (arrows) and within renal tubular epithelial cells in the kidney (arrows). BaseScope ISH ACE2. Magnification = 40X.
