Critical Protein Discovered for Healthy Cell Growth in Mammals (image) Penn State Share Print E-Mail Caption Using mouse models, Penn State cellular biologist Aimin Liu and his colleagues discovered a protein that is required for the growth of critical, hair-like structures called cilia on cell surfaces. The cilia on a mouse embryo, shown in this micrograph, would not be able to grow without the protein C2cd3. Credit Aimin Liu lab, Penn State University Usage Restrictions The image credit must be published along with the image. 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.