Mesothelial Cells (IMAGE) University of Pittsburgh Caption Mesothelial cell-cell junctions (β-Catenin immunostaining using a secondary antibody shown in magenta and cell nuclei shown in blue). Areas of disrupted junctional assembly are highlighted with punctuated instead of continuous staining. Cancer cells can squeeze through these weak spots to invade into the surrounding tissue. Credit University of Pittsburgh Swanson School of Engineering Usage Restrictions None 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.