Snail Mucus Dendrogram (IMAGE) Advanced Science Research Center, GC/CUNY Caption A dendrogram (tree) showing the genetic similarity between 71 proteins against ~180 related proteins that were found previously in other mollusks. The results confirm that even when compared against hundreds of other proteins simultaneously, similar proteins still cluster together. The black bracket on the right signifies the “outgroup,” a group of proteins that is intentionally unrelated from the rest. Credit Antonio Cerullo Usage Restrictions All Rights Reserved License Original 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.