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Phylogenetic tree based on BbβTUB nucleotide gene sequences (920 nt) derived from blood samples collected from South African cattle (in bold type), together with sequences previously published in GenBank (accession numbers in parentheses). Bootstrap values calculated as percentages of 1000 replicates are indicated at branching points. The horizontal scale bar shows the number of base substitutions per site. Toxoplasma gondii GUYMAT (accession no. JX045452) was used as an outgroup
