| the close relationship between south african and latin american htlv type 1 strains corroborated in a molecular epidemiological study of the htlv type 1 isolates from a blood donor cohort. | it has been difficult to explain why all htlv-1 sequences in salvador, a city in the northeast of brazil, belong to the transcontinental (a) subgroup of the cosmopolitan (a) subtype, since according to historical data the vast majority of slaves brought to brazil (through salvador) came from west africa, where only the western african subgroup (c) has been found. to shed more light on this subject we conducted a phylogenetic analysis of 23 isolates from blood donors of salvador. dna was extracte ... | 2007 | 17506606 |