Cancer cell finger-like projections (IMAGE) University of Turku Caption Breast cancer cells break through the basement membrane acting as a biological barrier. In the image, the finger-like projections formed by the actin of cancer cells invading the surrounding cell medium are coloured red and the basement membrane protein is coloured blue. Credit Aleksi Isomursu, Turku Bioscience Usage Restrictions Please attribute to Aleksi Isomursu, Turku Bioscience 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.