Fig. 5.

a-g Micrographs of various filopodial structures found in SARS-CoV-2-infected Vero E6 cells. a Filopodial extension whose end adheres to the plasma membrane of a neighboring cell. b-c The number of viral particles attached to the filopodia was variable, although they were frequently observed in high density surrounding the filopodial surface. d Filopodial bridges were constituted through wide intermembrane junctions. e Junctions of filopodial bridges were often found in the distal extremes. f In many cases, bridge filopodial junctions showed electron-dense reinforcements (arrowhead; detail). g Commonly, larger filopodia contact more than one neighboring cell. Scale bars represent 0.5 μm in a-g