Fig. 3From: The distribution of oxytocin and the oxytocin receptor in rat brain: relation to regions active in migraineOxytocin immunohistochemistry of the paraventricular hypothalamic nucleus and the arcuate nucleus. a. The Arcuate nucleus (Arc), that project to the SO and paraventricular hypothalamic nucleus (Pa), show intense oxytocin expression. b. Pa, a nucleus of neurosecretory cells in the hypothalamus, exhibits intense oxytocin staining. As in the SO, pearl-like fibers expressing oxytocin also were foundBack to article page