Cryptophycin (image) Bielefeld University Share Print E-Mail Caption The researchers want to 'package' the anti-tumor agent cryptophycin in such a way that it only targets cancer cells. The image shows how cryptophycin binds to a protein molecule, as also occurs in cancer cells, thus preventing their growth. Credit Image: Bielefeld University Usage Restrictions The image may only be used with appropriate caption and credit. 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.