The National Zoo announced Wednesday that its female giant panda, Mei Xiang, is not expecting.
Mei Xiang's behavior had indicated she might be pregnant, and officials closed the panda house to visitors earlier this month while they monitored her hormone levels and performed weekly ultrasound exams.
The zoo says it has determined that the panda experienced a false pregnancy. It's the fifth time Mei Xiang has had a false pregnancy.
Mei Xiang had been artificially inseminated in January.
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