Fig. 3
From: Placental pathology of the third trimester pregnant women from COVID-19
IF and FISH double staining result of SARS-CoV spike protein (green) and SARS-CoV-2 RNA (red) in all eight cases and positive control. a, Original magnifications × 200) and b, Original magnifications × 400):no positive signal was presented of monoclonal antibody against SARS-CoV spike protein (green) and SARS-CoV-2 RNA (red) in all eight cases by IF and FISH double staining. c, Original magnifications × 200) and d, Original magnifications × 400): both of positive signal were presented in acolon tissue with COVID-19 infection as positive control