Resource,Source,Identifier Anti-GFP antibody,Abcam,RRID:AB_300798 Goat Anti-Human Otx2 Polyclonal antibody, Biotin Conjugated,R and D Systems,RRID:AB_2157171 Mouse Anti-Human HuC / HuD neuronal protein Monoclonal Antibody, Unconjugated, Clone 16A11,Molecular Probes,RRID:AB_221448 Alexa Fluor 488 AffiniPure Donkey Anti-Chicken IgY (IgG) (H+L),Jackson ImmunoResearch Labs,RRID:AB_2340375 Donkey anti-Mouse IgG (H+L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluorâ„¢ 568,Thermo Fisher Scientific,RRID:AB_2534013 Donkey anti-Goat IgG (H+L) Cross-Adsorbed Secondary Antibody, Alexa Fluorâ„¢ 568,Thermo Fisher Scientific,RRID:AB_2534104 sigma-tau,http://www.sigma-tau.it/eng/,RRID:SCR_000488 C57BL/6J,Unknown,RRID:IMSR_JAX:000664