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Phylogenetic tree of all bovine V genes of the TRA/TRD locus. Tree of all bovine TRAV and TRDV genes and one representative human TRAV or TRDV gene of each human subgroup. The tree is based on the nucleotide sequences of the V-EXON till the second cysteine (2nd-CYS 104). All novel genes are numbered 1–391 and all previously described genes are shown under their previously published name. The V genes in each color-coded segment of the circle belong to one subgroup
