Resource,Source,Identifier Mouse Anti-CtBP2 Monoclonal Antibody, Unconjugated, Clone 16,BD Biosciences,RRID:AB_399431 Anti-CtBP 2,Synaptic Systems,RRID:AB_2086768 Glutamine Synthetase,BD Biosciences,RRID:AB_397879 GS (glutamine synthetase),Bioscience,RRID:AB_2313837 Mouse Anti-Glial Fibrillary Acidic Protein (GFAP) Monoclonal Antibody, Unconjugated, Clone G-A-5,Sigma-Aldrich,RRID:AB_477010 Anti-Histone H3 (tri methyl K4) antibody - ChIP Grade,Abcam,RRID:AB_306649 Anti-NeuN antibody [EPR12763] ,Abcam,RRID:AB_2532109 GSL I - isolectin B4 (GSL I-B4 , BSL I-B4 ),Vector Laboratories,RRID:AB_2314661 rho4D2,R. Molday, University of British Columbia; British Columbia; Canada,RRID:AB_2315273 blue cone opsin,J. Nathans lab Johns Hopkins,RRID:AB_2313807 OPN1SW (N-20),Santa Cruz Biotechnology,RRID:AB_2158332 red cone opsin,J. Nathans lab Johns Hopkins,RRID:AB_2315259 Miltenyi Mouse Epidermis Dissociation Kit,https://www.miltenyibiotec.com/US-en/products/epidermis-dissociation-kit-mouse.html#130-095-928,RRID:SCR_020284 AxioVision Imaging System,http://www.usask.ca/biology/scopes/AxioVision%204-7-2%20Takeoff%20Guide.pdf,RRID:SCR_002677 ImageJ,https://imagej.net/,RRID:SCR_003070 Adobe Photoshop,https://www.adobe.com/products/photoshop.html,RRID:SCR_014199