Article: Pitter -Patter of New Panda Expected; Zoo Plans All-Out Effort to Keep Ling-Ling's Cub Healthy

Ling-Ling and Hsing-Hsing, the nation's celebrated giant panda pair, are expected to become parents again by early August, and experts at the National Zoo are readying never-before-tried measures to retrieve a new cub from mother Ling-Ling and inject it with immunity-producing antibodies from father Hsing-Hsing's blood.

Such human manipulation, which includes anesthetizing the mother shortly after she gives birth and returning the cub to her later, is normally taboo with pandas. The mother-cub bond is often fragile, and zoos have never successfully hand-raised a panda cub.

But, after four cub deaths, the National Zoo has chosen to mount a full-court press of human help this time, ...

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