Poisonous anthrax that killed five Americans in the weeks after the Sept. 11, 2001 terror attacks doesn't match bacteria from a flask linked to Bruce Ivins, the researcher who committed suicide after being implicated by the Federal Bureau of Investigation, a scientist said.
Michael analyzed letters sent to the New York Post and offices of Senators Tom Daschle and Patrick Leahy, and found a distinct "chemical signature" not present in the flask known as RMR-1029, which Ivins could access in his laboratory at Fort Detrick, Maryland.