Fig. 6. Coronal sections showing Nissl-staining (A) of the wild-type and ak adult mesDA neuronal field compared to adjacent sections stained for Th (B). Coronal sections of lateral SNc neurons (a,a',b,b'), medial SNc neurons (c,c',d,d') and neurons of the VTA (e,e',f,f') are depicted. Boxed areas shown in A-F are shown at a higher magnification in the figures below (a'-f'). (g,h) High magnification of mesDA neurons in the VTA area, showing the altered morphology (arrows) in the ak compared with the wild-type mice.