Active Genes Discovered in the Developing Mammal Brain (1 of 3) (image) Penn State Share Print E-Mail Caption In this image, samples of mouse RNA being prepared for analysis by Xinwei Han, a Penn State graduate student in biology and an author of the research paper. Credit Christina Manbeck, Penn State Usage Restrictions The credit information must be published along with the picture. Share Print E-Mail 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.