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Genus	Species
Alpharetrovirus	23
Betaretrovirus	28
Bovispumavirus	2
Deltaretrovirus	10
Epsilonretrovirus	4
Equispumavirus	2
Felispumavirus	3
Gammaretrovirus	60
Intracisternal A-particles	6
Lentivirus	23
Prosimiispumavirus	2
Simiispumavirus	37