Mouse Xenograft Model (IMAGE) National Institutes of Natural Sciences Caption The left and right show xenograft tumors of parental cells and PTPRZ knockdown cells, respectively. Credit NIBB Usage Restrictions None License Licensed 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.