Immunohistochemistry Staining of T Cell Populations in Colorectal Tumor Tissue (image) Columbia University School of Engineering and Applied Science Share Print E-Mail Caption Immunohistochemistry staining of T cell populations in colorectal tumor tissue. Credit Piper Treuting/University of Washington. Usage Restrictions Please credit as: Piper Treuting/University of Washington. Share Print E-Mail 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.