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Summary scheme illustrating neuronal interactions between GnRH and dopaminergic neurons in mice. In the mouse preoptic area, about two-thirds of TH-IR neurons are also immunoreactive for KP. One-third of them, similarly to the Arc dopaminergic neurons, are distinct from KP-IR neurons. Axonal branches of GnRH processes establish synaptic connections with the TH- and KP-IR cell populations in both the preoptic area and arcuate nucleus.
