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. 2020 Aug 25;100:69–74. doi: 10.1016/j.placenta.2020.08.015

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Fig. 2 — Consistent SARS-CoV-2 spike glycoprotein expression in placental tissues with and without evidence of fetal transmission. A. Representative 200× brightfield images of AEC immunohistochemistry for SARS-CoV-2. B. Representative images (200×) of SARS-CoV-2 immunofluorescence. C. Graphical analysis of comparative fluorescence quantitation. COVID and Control: tissue cohorts as described in Fig. 1. Fluorescence Ratio: ratio of corrected total cell fluorescence of target antigen/secondary only control. COVID FT^Pos: COVID-19 affected pregnancies with evidence of fetal transmission, COVID FT^Neg: COVID-19 affected pregnancies without evidence of fetal transmission. ***p < 0.001. Scale bars: 50 μm.