Bacillus anthracis Cohn 1872 (Approved Lists 1980) Ravel J. Jiang L. Stanley S.T. Wilson M.R. Decker R.S. Read T.D. Worsham P. Keim P.S. Salzberg S.L. Fraser-Liggett C.M. Rasko D.A. The complete genome sequence of Bacillus anthracis Ames "Ancestor" 2009 191 445 446 Journal of Bacteriology J Bacteriol 0021-9193 1098-5530 10.1128/JB.01347-08 18952800 Select Agent Distribution 2016 TODO (parker): The virulence plasmids are pXO1 (AE017336=NC_007322) and pXO2 (AE017335=NC_007323). This virulent strain (MLST genotype GT62, group A3b) was isolated in 1981 from a dead 14-month-old female Beefmaster heifer in Sarita, Texas. The "Ames" misnomer arose in 1981 when cultures were shipped from Texas A&M University to the United States Army Medical Research Institute of Infectious Diseases using an old address label from Ames, Iowa. This strain is now referred to as "Ames Ancestor" in order to distinguish it from its descendant.