GDF-11 vs. Myostatin (image) Cell Press Share Print E-Mail Caption While myostatin expression decreases from 6 to 24 months in skeletal muscle rat, GDF-11 expression increases during this period. Credit Rudnicki et al./Cell Metabolism 2015 Usage Restrictions Credit Required. 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.