Ivins worked for decades in the U.S. Army Medical Institute of Infectious Diseases' biodefense lab at Fort Detrick, Maryland.

CNN: Therapist: Ivins described plot to kill colleagues

The FBI had traced the anthrax used in the attacks to the lab, the U.S. Army Medical Institute of Infectious Diseases, one of CNN's sources said.

CNN: Anthrax suspect, scientist, kills self as FBI closes in

Once a full report has been generated, clients receive a spiral-bound notebook containing results, clustered by specialty (infectious diseases, cancer, cardiovascular, etc.), as well as a graphic display of the results, a lab report and a glossary of biomarkers.

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