CNN The Lead With Jake Tapper April 17, 2013 20:17:00
Early stage they also can't definitively rule that out, jake. >> and as of course we know ricin obviously there is often a false positive for the first test. >> right. >> congressional correspondent dana bash chief congressional correspondent, quite a day on capitol hill. explain what happened there today and what is the atmosphere? is it as nerve wr-racking as after 9/11 when the anthrax letters were sent? >> reporter: not quite that nerve-racking. there was certainly a lot of anxiety then but certainly much more palatable than it has been for years here on capitol hill. i should note just to...
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