Fig. 24.     A: Location of cells labeled at the injection site from case L125 in relation to the compartments of the MFB (bold lower case letters) as defined by Nieuwenhuys et al. ('82). B: Location of neurons labeled at the injection site from case L123 in relation to the MFB. C: Areas of terminal arborization from cases L125, L123, and M067 plotted at a single forebrain level in relation to the compartments of the MFB (a-e) and the positions of cholinergic neurons (dots). Compartments a, b and c, which are   easily visible under dark field illumination, are delineated by continuous lines, interrupted lines mark the arbitrary borders of compartments d and e. Hatching represents areas of dense fiber/terminal labeling, whereas stippling denotes area of less dense labeling in case L123.