Mason-Pfizer monkey virus

**Definition:** A species of BETARETROVIRUS isolated from mammary carcinoma in rhesus monkeys. It appears to have evolved from a recombination between a murine B oncovirus and a primate C oncovirus related to the baboon endogenous virus. Several serologically distinct strains exist. MPMV induces SIMIAN AIDS.

**Tree numbers:** - B04.613.807.124.520 - B04.613.807.805.550 - B04.820.650.124.520 - B04.820.650.805.550

**Synonyms:** - SRV-3