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Localization of ACE2 in vessels in post-mortem flat-mounted COVID-19 (A–C) and control retinas (D–F). Samples label with lectin (green), collagen IV (red) and ACE2 white). ACE2 expression is analyzed in superficial and deep vasculature. ACE2: Angiotensin-converting enzyme 2, FM: flat-mounted. DAPI (blue) label nuclei. Scale bar: 200 µm.
