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3D model of an influenza virus particle. Each virion measures about 100nm (1/10,000th mm) in diameter; the envelope bears molecules of haemagglutinin (blue) and neuraminidase (red) and encloses 8 ribonucleoproteins (RNP), which encode the viral...

Swine and Avian Flu: Virology, History and Current events

... Released from the infected cell, the virions include their own copies of RNA, together with all they need to recognise ... For instance, HIV can allow a cell to keep working on its own tasks for a long time (sometimes years) before bursting ...