Fig. 1
From: Does methotrexate influence COVID-19 infection? Case series and mechanistic data
MTX inhibits SARS-CoV-2 infection in highly exposed individuals. a Initial patient group of four women and their respective husbands. b Confirmatory cases. Symptoms related to COVID-19 and results of mucosal swabs for SARS-CoV-2 RNA and SARS-CoV-2 IgG antibody serum testing are shown. Red squares: positive or present; white squares: negative or absent; gray squares: not tested. Methotrexate use indicated by blue squares