Cross section retinal organoids (IMAGE) Max-Planck-Gesellschaft Caption Cross-section through part of a retinal organoid: On day 143 of their differentiation, the inner nuclear layer (bottom) contains the cell bodies of functionally distinct cells: those of the amacrine and horizontal cells (white) and Müller glial cells (red). The outer nuclear layer (top) contains the cell bodies of the photoreceptors (light-sensitive cells; green). The sketch on the right shows the cell types and structure of the vertebrate retina in the same orientation as in the organoid: Here, light enters from below and traverses the entire retina until it hits the photoreceptors (top cell layer in gray). The inner nuclear layer contains amacrine and horizontal cells (white) and bipolar cells (green). Müller glial cells (red) span the entire retina. The axons of the retinal ganglion cells (gray) form the optic nerve and transmit the light signal to the brain. Credit MPI for Molecular Biomedicine/ Yotam Menuchin-Lasowski Usage Restrictions Use of images is limited to editorial coverage of scientific topics relating to the activities of the Max Planck Society. Any kind of commercial use (including, in particular, the exploitation of images by means of sale or incorporation in image databases or image catalogues) as well as any promotional use/use for merchandise purposes, disclosure to third parties or granting of related rights to third parties is expressly not permitted. 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.