Helpful Shellfish (IMAGE) Purdue University Caption Wilker notes that not everyone in his lab has a chemistry degree; some of the lab members are shellfish -- about 1,000 of them to be exact. The shellfish play a valuable role by demonstrating how they make adhesives so that scientists can build upon their biological strategies. Credit Purdue University photo/Rebecca McElhoe 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.