Human Stem Cell-Derived Pituitary Cells (IMAGE) Cell Press Caption Immunofluorescence image of hPSC-derived pituitary cells after 30 days of differentiation. The cells were stained for ACTH (red) and DNA/nucleus (blue). Cells similar to the ones shown in the picture were used for the transplantation studies. Credit Bastian Zimmer, Sloan Kettering Institute. Usage Restrictions Credit Required. 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.