Fig. 8From: Deletion of ER-retention motif on SARS-CoV-2 spike protein reduces cell hybrid during cell–cell fusionSpike protein mediates cell fusion in transduced K562 and SK-Hep1 cells. A, B Immunofluorescent images of hybrid or syncytial formation when co-culture S-WT-K562 or S-Δ19-K562 with hACE2-SK-Hep1 cells were obtained by confocal microscope. Scale bar equals 40 µmBack to article page