cell transformation cartoon (IMAGE) Penn State Caption Researchers revealed how to convert stem cells to more mature cell types using small molecules instead of expensive growth factors and reported their results in a paper published today (Aug. 26). Yuqian Jiang, first author on the paper, illustrated finding the path. Credit Yuqian Jiang, Penn State Usage Restrictions non commercial use only License Original 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.