Anthrax, but Not Bacillus anthracis?

The article focuses on the other possible agents of anthrax aside from bacillus anthracis and other soil dwelling bacterium of the genus bacillus. It is stated that bacillus anthracis is a close relative of bacillus cereus and bacillus thuringiensis because of the presence of two large virulence plasmids, pXO1 and pXO2. The authors believe that bacillus cereus isolates can harbor either one or both of the B. anthracis plasmids, and they may or may not harbor anthrax toxin genes.