Anthrax investigation still yielding findings: Chemical composition of spores doesn’t match suspect flask/Nature
This is an important short piece from Nature (online February 25, 2009) that I missed last February. It explains why the anthrax letter spores did not come directly from Ivins’ flask: they incorporate metals not found in Ivins’ spores, and were therefore grown under different conditions. Their progenitors probably did come from the flask, but…