Dendritic cells (IMAGE) University of Turku Caption Dendritic cells navigating in a microscopic labyrinth with the help of a chemokine gradient they have created. The nuclei of the cells are pictured in blue in the upper image, and the lines in the bottom image represent cell movement. Credit Jonna Alanko, University of Turku Usage Restrictions Please attribute the image to Jonna Alanko 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.