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Immunofluorescence analysis of SARS-CoV-2-infected primary bronchial HAE-ALI over a course of 21 days. (A and B) Mock- and SARS-CoV-2-infected HAE-ALIB4-20 cultures were costained with anti-NP and anti-ZO-1 antibodies (A) or costained with anti-NP and anti-β-tubulin IV antibodies (B). Confocal images were taken at a magnification of ×40 on the indicated days postinfection (dpi). Nuclei were stained with DAPI (blue).
