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Research Highlights

Nature Immunology 10, 571 (1 June 2009) | doi:10.1038/ni0609-571

Research Highlights

HIV-1 enters via endosomes Because the envelope glycoprotein of human immunodeficiency virus type 1 (HIV-1) promotes fusion with target cells at a neutral pH, it is assumed that HIV-1 fusion occurs at the cell surface. However, in Cell, Melikyan and co-workers provide evidence that HIV-1 fusion actually occurs in endosomes.