Effect of neonatal MPFC lesions on D2 DA receptor binding in the striatum and nucleus accumbens. Coronal sections were incubated, as described in Materials and Methods, in the presence of 1 nm [3H]-YM-09151-2. Results from the quantitative analysis of [3H]-YM-09151-2 binding are presented in Table 2. Cpu, Caudate-putamen;Acc, nucleus accumbens; OT, olfactory tubercles; PD39, postnatal day 39; PD60, postnatal day 60.