by Public Library of Science Composite of an embryonic mouse eye cup (E14.5) labeled with antibodies against the developmental transcription factors Lhx2 (red) and Otx2 (green), and cultured human retinal pigmented epithelium (RPE) labeled with antibodies against MITF (red) and ZO-1 (green). Credit: Mazal Cohen-Gulkar, composite by Ruth Ashery-Padan (CC-BY 4.0, https://creativecommons.org/licenses/by/4.0/) Combining a map of...