Fig. 1

Partial sequences of the long terminal repeat (LTR) promoter region of BLV based on DNA from blood cells of the 23 KPM study subjects positive for the LTR (long terminal repeat) promoter region of BLV. These sequences are compared to 9 GenBank reference sequences [20] (top left column) from 6 of the 10 BLV genotypes established through comparisons of the env sequences of BLV isolated from cattle [1]. No reference sequences of the LTR region were available in GenBank from 3 of the genotype groups (7, 10,11). The reference sequence accession code, specimen country of origin, and genotype group are as follows (genotypes in parentheses are probable, based on country of origin, but not proven by phylogenetics): EF600696.1 and DQ288175.1 - USA, (genotype 1 or 3); HE967301.1 – Uruguay, (genotype 1); K02120.1 – Japan, (genotype 1 or 3); FJ914764.1 – Argentina, genotype 2; AH001143.2 and AH002557.2 – Belgium, (genotype 4); M38278.1 – Russia, (genotype 4,7, or 8); DQ288218 – Costa Rica, genotype 5; The first base of each 10 bases is directly under the first digit of the base pair (bp) number. Dots indicate nucleotide bases identical to the consensus. Letters indicate bases differing from the consensus of the reference sequences. Figure formatting was done with GeneDoc (https://genedoc.software.informer.com)