low rates of transmission of srv-2 and stlv-i to juveniles in a population of macaca fascicularis facilitate establishment of specific retrovirus-free colonies. | prevalence of simian retrovirus-2 (srv-2) and simian t lymphotropic virus type i (stlv-i), was unknown in 337 captive cynomolgus macaques. | 2009 | 19320800 |