Light-Savvy Cells (IMAGE) Boston Children's Hospital Caption Cells containing melanopsin, the molecule that captures light for ganglion cell photoreceptors, are stained green in this mouse retina, with those of the M1 type appearing especially bright. Credit Elliott Milner and Michael Do, Boston Children's Hospital 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.