... cell membranes. At thispoint, the entry pathways of enveloped virions with and without associated lipoproteins would merge.Without lipoprotein association, the capture of virionsFig. 1. Model ... lipoprotein-associated enveloped virions, E2 might interact with CD81 or SR-BI and the entry pathways for enveloped virions with and without associated lipoproteins merge. At least one additional ... extent. HDL, which does notinteract with the LDL receptor, had no effect. Inagreement with these results, it was shown that onlyHCV RNA-containing particles with buoyant densitiesof <1.06...