. "\"The penetration of an enveloped virus into a host cell by the fusing of the viral envelope with the host cell plasma membrane, releasing the virion contents into the cell.\" [GOC:jl]" . . "viral entry into host cell via membrane fusion with the plasma membrane" . "viral envelope fusion with host cell membrane" . "viral envelope fusion with host membrane" . "viral envelope fusion with host plasma membrane" . "viral penetration via membrane fusion" . "Reactome:REACT_6176 \"Concerted hemagglutinin pore formation, Homo sapiens\"" . "Reactome:REACT_6180 \"Fusion of the influenza virion HA2 protein transmembrane domain to the host cell endosome membrane, Homo sapiens\"" . "Reactome:REACT_6351 \"Fusion of the Influenza Virion to the Host Cell Endosome, Homo sapiens\"" . "Reactome:REACT_8032 \"Fusion of viral membrane with host cell membrane, Homo sapiens\"" . "VZ:987" . . . . "viral-cell fusion molecule activity" . "viral envelope fusion" .