DrJohn Doe,a Research Microbiologist for a University Medical Center,has Been

Multiple Choice

Dr.John Doe,a research microbiologist for a university medical center,has been accused of sending Bacillus anthracis,the causative agent of anthrax,through the mail to the President.You,as a public health official with the CDC,have to determine if it is the same strain as the two strains of B. anthracis found cultured in his lab.Which method of identification would you use to compare these three bacterial samples?

A) serological testing using agglutination
B) Gram staining
C) biochemical test identification
D) pulse-field gel electrophoresis