Definitions for "Endogenous retrovirus"
(ERV) An active or inactive retroviral genome integrated into a host organism's genome.
Integrated retrovirus DNA (provirus) derived from infection of the germline of an ancestral animal. All animals are thought to carry numerous endogenous (but nonfunctional) retroviruses, some of which were inserted many millions of years ago.
Integrated retrovirus DNA (provirus) believed to be derived from infection of the germline of an ancestral animal. All animals are thought to carry numerous endogennous retroviral genes, some of which were inserted millions of years ago. Endogenous retroviral genes could produce virions, viral components, or be silent.