Mature the Lungs of Preterm Babies (IMAGE) Tohoku University Caption New research into optimizing steroid use in pregnancy has shown that it is possible to mature the lungs of preterm babies by using approximately 70 percent less drugs. Credit Women and Infants Research Foundation Usage Restrictions Credit: Women and Infants Research Foundation 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.