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Associated Press
Dennis Kelly, Director of the National Zoo, during a news conference at the National Zoo in Washington the day after it was announced that the Zoo’s female giant panda gave birth to a cub, Monday, Sept. 17, 2012, in Fairfax, Va. Mei Xiang gave birth Sunday at 10:46 pm, but the zoo staff has yet to see the new cub because Mei Xiang has built a large nest in her den. (AP Photo/Pablo Martinez Monsivais)

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