LGALS9 and COVID-19: We found that SARS-CoV-2 infection results in significant downregulation of surface Gal-9, which was evident not only in percentages of Gal-9+ neutrophils (Fig. 6K and L and Fig. S2E) but also in the intensity of Gal-9 expression in neutrophils from COVID-19 patients versus HCs (Fig. 6M and N).