Expression Pattern in the Developing Lung (image) University of Pennsylvania School of Medicine Caption The developing lung has similar expression patterns (red) of Nkx2-1 (bottom) and the novel long non-coding RNA NANCI (top), which promotes Nkx2-1 expression. Cell nuclei are stained blue. Credit Michael Herriges, Perelman School of Medicine, University of Pennsylvania Usage Restrictions None 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.