Complete coverage: Oklahoma tornado
Yoshihiro Kawaoka, a professor of pathobiological sciences in the School of Veterinary Medicine at the University of Wisconsin-Madison, talks with a group of media representatives during a tour of the Influenza Research Institute on Feb. 13, 2013.
Peek at UW lab with bird flu virus
A bird flu virus at the center of an international debate sits in a padlocked freezer, deep inside a University of Wisconsin-Madison lab, waiting for new government guidelines that will allow researchers to continue unlocking its secrets.
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