FAK Tumor Growth (image) University of California - San Diego Caption Normal breast tissue and invasive ductal carcinoma stained brown with antibodies to activated FAK. Blood vessels are indicated by BV. Credit David Schlaepfer, UC San Diego. Usage Restrictions Must use photo credit above. 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.