«This allowed us to examine the interactions of the florescent integrase under the light microscope both in vitro in a single HIV virion as well as in a human cell infected with it.» (sciencedaily.com)
Infection of the dendritic cells can not be detected, but the clustered T cells form syncytia, release virions, and die. (science.sciencemag.org)
However, there are currently no extraterrestrial missions planning to hunt for virions in the water plumes on Jupiter's moon Europaor the jets of Enceladus. (astrobio.net)