dr. taubenberger-jeffrey taubenberger at walter reed, finally, at the end of this century, put in a requisition for some people who had died of that flu and asking if he could find some lung tissue that had some viral genes in it. and those pic-that picture you just saw is of the little pieces of paraffin wax with the lung tissue in it. and inside that lung tissue, after all these years, there is still that flu virus from 1918. c-span: now go back to this pathology institute out here at walter reed. have you been there? >> guest: yes, i have. c-span: have you--there are three million--what?--samples? physical... >> guest: yeah, there are--they're in boxes and jars and things. and-and they're--it's this big sort of corrugated metal warehouse with--and eve-and with cement floors. i guess it's to protect it from burning down, or maybe because it's more cheap to make that way. and they have these big racks of box after box after box. and there's a man there named al riddick, and his job is to--when somebody says, 'i think i'd like to get some lung samples from a--well, what was asked for in this ca