Short polymer compartments (IMAGE) Penn State Caption Membraneless compartments made from short polymers (10 unit long polymer of aspartic acid and 10 unit long lysine). Brightfield image (left) and fluorescent image (right) showing fluorescently labeled RNA (red) partitioned into the compartment. Credit Fatma Pir Cakmak, Penn State Usage Restrictions None License Licensed 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.