gabra1 expression in the developing zebrafish. WISH was performed at 1, 2 and 3 DPF with an anti-sense gabra1 probe. Arrows indicated the expression of gabra1 at each developmental stage. Minimum of ten larvae per group/biological replicate. Abbreviations: FB, forebrain; OT, optic tectum; C, cerebellum; HB, hindbrain; MO, medulla oblongata. Scale bars: 0.2 mm.