The statement above continues to puzzle me. We have heard, variously, that the Daschle letter anthrax was highly refined in a sophisticated centrifuge with specific additives that 'aerosolized' the anthrax, and yet there have been persistent stories that this was 'homegrown' anthrax.
My theory, which I've stated previously on FR threads, is that the vial passed to 9-11 hijacker Atta by the Iraqi agent in Prague contained the sophisticated anthrax. The hijackers were trained to use it to grow bigger batches, which would by necessity not have the additive or the centrifuged refineent.
Therefore you would have TWO different sample types, since they used the pure batch to send to Daschle.
This would also explain the evidence that the hijackers had rashes and skin conditions consistent with anthrax exposure, which evidence had emerged after 9-11 from 2 independent sources.