Schematic Representation of the Swapping Event (image) Johannes Gutenberg Universitaet Mainz Share Print E-Mail Caption One of the knots grows in size, while the other diffuses along the contour of the former. Credit ill./©: Peter Virnau, JGU Usage Restrictions The image is only to be used in connection with the JGU press release and with the given credits. 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.