PIK3CAE542K vascular networks (IMAGE) University of North Carolina Health Care Caption Representative confocal images of control and PIK3CAE542K vascular networks. Vascular networks were labeled with fibrin (magenta), 4′,6-diamidino-2-phenylindole (DAPI) (white), actin (green), and endothelial cell–specific CD31 staining (cyan). Vascular networks were fixed 3 days after seeding. Scale bars, 100 μm. Credit Aw et al. Usage Restrictions Credit must be given to the creator. License CC BY 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.