Giant panda Ultrasound (2 of 2) (IMAGE) Smithsonian Caption National Zoo veterinarian Carlos Sanchez performs an ultrasound on giant panda Mei Xiang on May 7, 2008, at the Fujifilm Giant Panda Habitat. Zoo veterinarians conduct weekly ultrasounds on Mei Xiang to monitor any changes in her reproductive tract and look for evidence of a fetus. So far, the ultrasounds have not shown evidence of one. Because panda fetuses do not start developing until the last weeks of a gestation period, Zoo veterinarians say they do not yet expect to see a fetus. Credit Jessie Cohen/Smithsonian’s National Zoo Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.