Two Components of Cell Movement (IMAGE) Johns Hopkins Medicine Caption Diagram of a hand-like projection (left) versus the "ruffling" of the cell membrane (right) that occur with and without the activation of the messenger protein network. Credit Devreotes Lab 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.