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.
``Spores from two of those show a distinct chemical signature that includes silicon, oxygen, iron, and tin; the third letter had silicon, oxygen, iron and possibly also tin,'' Kwok wrote. ``Bacteria from Ivins' RMR-1029 flask did not contain any of those four elements.''