Figure 1From: Modes of transmission and genetic diversity of foamy viruses in a Macaca tonkeanacolonyComparative seroprevalence rates for foamy virus and HTLV-1/STLV-1 in the 56 animals of the colony. According to age at the last sampling, animals were classified in three groups corresponding to immatures (0–4 years old), subadults (5–8 years old) and adults (more than 8 years old).Back to article page