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Opal immunofluorescence staining of SARS-CoV-2 receptors in pancreatic samples. The SARS-CoV-2 receptors ACE2 (pseudo-yellow), CD147 (pseudo-magenta), neuropilin-1 (pseudo-red), and TMPRSS2 (pseudo-white) and the pancreatic β cell maker NKX6.1a (pseudo-green) were detected in the pancreatic samples. Scale bar, 50 μm.
