Tumor Cells Reprogram NK Cells (VIDEO) Rockefeller University Press This video is under embargo. Please login to access this video. Caption At first, the presence of NK cells restricts the growth of a tumor formed in the laboratory. But after 36 hours, the cancer cells reprogram the NK cells and the tumor starts to invade its surroundings. Credit Chan et al., 2020 Usage Restrictions Reporters may freely use these materials in news coverage with the appropriate credit information. 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.