Tumor Cell (1 of 2) (image) University of Zurich Caption This is an electron microscopy from a tumor cell that is on the way to extravasate through an alveolar endothelium blood capillaries - the tumor cell is depicted in blue green, the endothelial cell in purple red. The protrusion of the tumor cell are seen that form their way through the endothelial cell. 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.