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Electron microscopy of negatively stained particles assembled in vitro and of authentic, immature HIV-1 virion. (A) Particles assembled in buffer A. (B) VLP assembled in buffer A plus 5% rabbit reticulocyte lysate. (C) Immature HIV-1 virion. (D) VLP assembled in buffer A plus 2 μM IP5. (E) “Stacked plates” assembled in buffer A plus 2 μM IP6. (Scale bars, 100 nm.)
