Figure 5.

Neuroendocrine dopaminergic neurons observed in TH-GFP mice in the arcuate nucleus exhibit typical dendrites and an axonal projection to the median eminence (ME). Camera lucida-like reconstruction of a Neurobiotin-filled neuroendocrine dopaminergic neuron (red) from a sagittal slice with three dendrites and a separate axon that enters the ME. The relatively short, thick dendrites bear multiple long spines (a, b), are confined to the arcuate nucleus, and do not colocalize with Ankyrin G label (pseudocolored cyan; bottom). The thin axon has an Ankyrin G-positive initial segment shortly after leaving the soma (c, arrowheads), does not exhibit spines (d), and projects to the ME.