Retinal organoids (IMAGE) Heidelberg University Caption Side by side comparison of the emerging retina in the fish embryo and in the retinal organoid grown in a Petri dish. Different colours mark the optic vesicle with retinal progenitor cells (magenta – left picture, red – middle picture), progenitors of the retinal pigmented epithelium and forebrain (cyan – middle picture) and emerging retinal cell types (green – right picture). Credit Adapted from Zilova, Weinhardt, et al., eLife 2021, 10:e66998, CC BY 4.0 Usage Restrictions This image may be used only in connection with the contents of this press release, and the source of the image must also be cited. License Original 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.