Fig. 15.
A: PHA-L labeled terminal
varicosities in close apposition to a proximal dendrite of a cholinergic
neuron. The grid simulates the proportions of the ocular reticle used to screen
sections from high magnification (63x) light microscopic analysis. One division
of grid = 16 µm. B-F: Composite maps illustrating putative zones of contact
between afferent fibers and cholinergic neuronal elements following PHA-L
injections into the (B) locus coeruleus, (D) far-lateral
hypothalamus, (E) mid-lateral hypothalamus, (F) medial
hypothalamus. C: shows the distribution of putative contact sites from a
material stained for DBH/ChAT. Cholinergic neurons are represented by dots.
Zones of putative contacts between cholinergic elements and terminal
varicosities are depicted as solid squares (corresponding to 80x80 µm areas in
the section).