Annie Dookhan, center, sits between two unidentified men in Suffolk Superior Court moments before her arraignment in Boston, Thursday, Dec. 20, 2012. Dookhan, the former chemist at the

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Annie Dookhan, center, sits between two unidentified men in Suffolk Superior Court moments before her arraignment in Boston, Thursday, Dec. 20, 2012. Dookhan, the former chemist at the center of a U.S. drug testing scandal, pleaded not guilty to charges including perjury and tampering with evidence. (AP Photo/Steven Senne, Pool) less 

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Associated Press
Thu, Dec 20, 2012 9:59 PM EST