Bringing Nutrients into Cells (image) Purdue University Caption This graphic illustrates an intermediate step in the process that brings nutrients or other substances into cells. The membrane proteins are shown holding the nutrient in a small cavity within the cellular membrane. A Purdue team led by Jue Chen, an associate professor of biological sciences, captured an image of a key step that reveals interactions of the main proteins involved in the process. Credit Jue Chen/Purdue University Usage Restrictions None 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.