Figure 7.
The ultrastructural features of SERT immunoreactive axon terminals are unchanged in the striatum of immature and mature VGLUT3 KO mice. SERT immunoreactive axon terminals in the striatum of immature (P15) (A) and adult (P60) (B), wild-type (WT) and VGLUT3 knock-out (KO) mice, after immunogold labeling for SERT. Terminals singly labeled for SERT (thin arrows) were observed for each age and genotype and found to be unchanged in size or in the frequency at which they contain mitochondria. m, mitochondria; ut, unlabeled terminal. Magnification: 13,500×, Scale bar: 500 nm.