Unique distribution of ErbB4-positive cells in brain regions. Images (photographic negatives) of tdTomato florescence in ErbB4-reporter mouse brain slices illustrating overall ErbB4-positive cell expression. Composite images (A) from a sagittal section 1.80 mm lateral from midline; (B) from a sagittal section 2.52 mm lateral from midline; (C) from a coronal section 4.28 mm relative to bregma; (D) from a coronal section 1.54 mm relative to bregma; (E) from a coronal section −1.06 mm relative to bregma; (F) from a coronal section −3.80 mm relative to bregma; (G) from a coronal section −4.36 mm relative to bregma; and (H) from a coronal section −6.24 mm relative to bregma. A, B, Positions of the sagittal sections were indicated by lines a and b in C–H. C–H, Positions of the coronal sections were indicated by lines c–h in A, B. Amyg, Amygdala; BG, basal ganglia; Cb, cerebellum; Cx, cortex; HB, hindbrain; Hp, hippocampus; Hy, hypothalamus; MB, midbrain; OB, olfactory bulb.