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. 2022 Mar 17;3(4):262–268.e4. doi: 10.1016/j.medj.2022.03.004

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SARS-CoV-2 Omicron variant distribution in lung

(A–H) Immunohistochemistry for nucleocapsid protein (brown) and RNAscope in situ hybridization for viral RNA (red) in hamsters infected with SARS-CoV2 WA1/2020 (A–D) and Omicron (E–H). Scale bars: 200 μm (A and E) and 50 μm (B–D and F–H).