Tumor Cell (2 of 2) (image) University of Zurich Caption Tumor cells (green) adhere on the endothelium (red) that gets activated and permeable through CCL2-CCR2 signaling. Tumor cell extravasation is facilitated by recruited monocytic cells (blue). Technique: Adaptation of confocal image stacks creating an artificial surface. Credit UZH 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.