The Ames branch of B. anthracis. This figure shows the relationship between the Ames strain and its closest relatives in a worldwide collection . Twenty-nine of 31 original  SNPs are defined by their positions in the Ames genome (NC_003997) and their positions along the Ames branch. Ames has the derived state for all 29 SNPs and the 4 SNPs between Ames and the Texas Goat are specific for the Ames strain alone . A0728 was isolated in China in 1957 but the specific location/source of this isolate is unknown.