Fig. 22.     A: Reconstructed ChAT labeled neuron located in the medial portion of the HDB (indicated by asterisk in upper right inset) whose long dendrites are approximated by a number of PHA-L labeled varicosities (arrows) originating in the anterior hypothalamic area (case M076). Curved arrows point where the left dendritic branch of this cholinergic neuron is lost from the plane of focus, but the same axon distribute several additional varicosities (arrowheads). B: Low power electron micrograph showing the perikaryon of the identified neuron (arrowhead). Vessel in boxed area indicated by asterisk is same as in A and C. C: Higher power electron micrograph from boxed area in B. D: PHA-L labeled terminal bouton (star) abutting on the immunolabeled dendrite (arrowhead) from region boxed in C. Arrow points to synaptic vesicles in the nickel intensified axonterminal. Scale bars: A=10 µm, B=10 µm, C= 2.5 µm, D=1 µm.