Fig. 5. Domain patterns of retrogradely labeled IO axons. (A,E,I,M,Q) A diagram of DiI (red star) and DiA (green star) insertion sites in one half of the cerebellum. (B-D,F-H,J-L,N-P,R-T) Retrogradely labeled neurons in the IO. Ventral views are shown. Rostral is at the top. Dashed line indicates the ventral midline. Scale bar, 500 µm. (U) A diagram of IO areas (see Fig. 1P).