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Median-joining network based on mitochondrial DNA (mtDNA) control-region sequences of four Italian horse breeds: Sardinian Anglo-Arab (black); Bardigiano (green); Maremmano (red); Murgese (yellow). Circles are proportional to the numbers of samples carrying the same haplotypes. The asterisk indicates the haplotype identical to ERS (Equine Reference Sequence; NC_001640.1). Capital letters refer to mtDNA haplogroups.
