In this Sept. 15, 2011 photo, Liz Shires, Wendy's research and development laboratory coordinator, toasts two buns for the new Dave's Hot 'N Juicy Cheeseburger in the lab at the company's international headquarters in Dublin, Ohio. (AP Photo/Paul Vernon)

Associated Press
In this Sept. 15, 2011 photo, Liz Shires, Wendy's research and development laboratory coordinator, toasts two buns for the new Dave's Hot 'N Juicy Cheeseburger in the lab at the company's international headquarters in Dublin, Ohio. (AP Photo/Paul Vernon)
In this Sept. 15, 2011 photo, Liz Shires, Wendy's research and development laboratory coordinator, toasts two buns for the new Dave's Hot 'N Juicy Cheeseburger in the lab at the company's international headquarters in Dublin, Ohio. (AP Photo/Paul Vernon)
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