Fusion from without directed by human immunodeficiency virus particles

Abstract excerpt

Fusion from without is the process through which particles of some enveloped viruses can direct fusion of target cells in the absence of viral replication. We demonstrate here that human immunodeficiency virus (HIV) particles can efficiently promote fusion from without. Using HeLa-CD4 cells carrying a Tat-inducible lacZ gene, we observed syncytia as early as 6 h after exposure to HIV particles, before HIV gene...

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