1. As a result, HIV-1 provirus formation is inhibited. 2. Pomerantz found provirus reservoirs locked in cells of four of the men. 3. Endogenous retroviruses are always in the state of a provirus . 4. These integrated DNAs are termed " proviruses ". 5. Researchers have been working on developing an attenuated provirus vaccine for bovine. 6. As a result these proviruses are probably conserved. 7. You basically have inactive proviruses stored within the genome . . . lots of them. 8. Endogenous retroviruses are always in the provirus state in the host cell and replicate through reverse transcription. 9. Proviruses may account for approximately 8 % of the human genome in the form of inherited endogenous retroviruses.10. The timing, it is presumed, depends on the activity of the chromosomal locus hosting the provirus .