Fig. 7

SARS-CoV-2 infection of plucked HFs. Nucleocapsid (NC, green) and keratin 15 (K, red) expression in SARS-CoV-2-WT (A) and Mock-infected (B) hair follicles. Main NC and K15 expression can be detected in the ORS only in virus infected HF, visible in the highlighted magnification (A’). Caspase3 (CAS3, green) and keratin 15 (K, red) expression in SARS-CoV-2-WT (C) and MOCK (D) infected hair follicles. Main CAS3 and K15 expression can be detected in the ORS only in virus infected HF, visible in the highlighted magnification (C’). Nucleocapsid (NC, green), keratin 15 (K, red) and TUNEL (white) expression in SARS-CoV-2-WT (E) infected hair follicles. Main CAS3, K15 and TUNEL expression can be detected in the ORS, visible in the highlighted magnification (E’). Nuclear marker DAPI is shown in blue. Scale bar: 50 μm (A–H), 20 μm (A’–G’).