Whole mount RNA in situ hybridization of slc2a3a at late embryonic and early post-hatching stages (48–120 hpf). Pictures in the left column depict alternating lateral (A,C,E) and dorsal (B,D,F) views. Anterior is to the left. Higher magnifications (a1–f3) corresponding to boxes in (A–F). Note staining in hindbrain, ventral midbrain, optic tectum, ventral thalamus, ventral telencephalon and retina. Detailed descriptions can be found in the text, for abbreviations see Table 1. Scale bar in (A), 100 μm and pertains to (A–F); scale bar in a1, 50 μm and pertains to a1–f2, d3, f3 and scale bar in a3, 50 μm and pertains to a3, b3.