Figure 2

Frontal sections at two rostro-caudal levels. The frontal sections are shown for position indicated by the vertical lines in Fig. 1A. Top row: sections (40 μm thick) stained for cells (Nissl); middle row: neighboring sections stained for myelin; bottom row: sections stained for zinc at comparable rostro-caudal level from another series. Scalebar: 2000 μm. Abbreviations as in Fig. 1C.