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Classifications of ERVs and XRVs
| ERV/XRV genus (no. of species)a | Morphological typeb | TM classc | Pol classd |
|---|---|---|---|
| Alpharetrovirus (9) | C | 2 | II |
| Betaretrovirus (5) | A, B, and D | 1 and 3 | II |
| Deltaretrovirus (4) | C | 1 | II |
| Epsilonretrovirus (3) | Not assigned | Not assigned | I |
| Gammaretrovirus (18) | C | 1 | I |
| Lentivirus (10) | Rod/cone core | 3 | II |
From the list at http://www.ictvonline.org/virustaxonomy.asp.
From reference 304.
From reference 20.
From reference 305.
