Experimental Setup (image) Johns Hopkins Medicine Caption This is a depiction of the researchers' experimental setup. Three fluorescent molecules of various sizes are attempting to enter the cilium, where they will be trapped when they snap together with the protein anchored in the membrane of the cilium. Credit Yu-Chun Lin (first author), courtesy of Nature Chemical Biology Usage Restrictions Permission from Nature to republish 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.