Figure 1. Distribution profile of D1-like/[³H] SCH 23390 binding sites. Rat, monkey and human brain sections were incubated with 1.0nM [³H] SCH 23390 as described in the Materials and Methods. Autoradiograms were generated by apposing the sections against tritium sensitive films for 6-8 weeks (A-C). The bar equals 1cm. Abbreviations: CA, Ammon's horn; Cd, Caudate; DG, Dentate gyrus; Str, Dorsal striatum.