Differences in STLV-1 genome structure in baboons dead from malignant lymphoma in various chronological periods of a many-year outbreak of the disease

The fragments of simian retrovirus genome STLV-1Ph detected in lymphomatous specimens from baboons dead from malignant lymphoma in different periods of a many-year (22 years) outbreak are studied. African and Asian subtypes of STLV-1Ph retrovirus circulate in the animals: the African type predominates during the first and Asian during the second half of the outbreak.