EXPERIMENTAL FIGURE 5-47 Release of progeny virions by budding. Progeny virions of enveloped viruses are released by budding from infected cells. In this transmission electron micrograph of a cell infected with measles virus, virion buds are clearly visible protruding from the cell surface. Measles virus is an enveloped RNA virus with a helical nucleocapsid, like rabies virus, and replicates as illustrated in Figure 5-46.

[Thomas Deerinck, NCMIR/Science Source.]