Image 2: An ultrasonography fetus scan. (IMAGE) St. John's College, University of Cambridge Caption An ultrasonography fetus scan Credit Credit: GagliardPhotography / Shutterstock Usage Restrictions No commercial use 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.