(IMAGE) University of Basel Caption The microscopic image shows how cancer cells (colorless cells) that do not produce IGF-II but need it for their growth reproduce in a population of cancer cells that produces and consumes IGF-II (green cells). Credit Fig: Daniela Ferarro, University of Basel 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.