Front cover: A cartoon drawing showing a cross section of a retroviral virion, surrounded by three-dimensional structures of some virion proteins. (Clockwise from the upper left) The Gag proteins NC, CA, and MA, and, below the virion, the Pol proteins RT and IN and the virion protease PR. The colors of the structures correspond to the colors of the same components in the virion cartoon. (Graphic by Richard Frederickson, NCI-Frederick Cancer Research and Development Center, based on a figure provided by M. Summers.)
Back cover: (Top) A cartoon depiction of an infected cell showing the retroviral life cycle. (Graphic by Richard Frederickson, NCI-Frederick Cancer Research and Development Center.) (Bottom) A schematic illustration of the time course of HIV infection in a typical patient. Reproduced with permission from Cold Spring Harbor Laboratory Press.
