anecdote for ricin. we say that people are treated systemically. for example, if you knew someone inhaled it and were developing systems, you might put them on a breathing machine, try to support their breathing for them, give them a lot of fluids, because you lose a lot of fluids in a situation like this. if it was inhaled or injected, both of which can also be deadly, you would also treat them systemically, but there's been various talk of an anecdote that they worked on, but there is none available now. >> and if these letters do indeed have ricin, could the ricin have spread with other pieces of mail that they came in contact with through the regular sorting process? >> it could, and remember we talked about this with regard to anthrax several years ago, but this is a little different, again, because in order for it to spread, the same sort of thing would apply here, it would really probably have to be pretty sophisticated in terms of how it was weaponized, to actually go from envelope to envelope and possibly be poisoning other people.