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Photomicrographs of met-enkephalin immunoreactive cells in the anterior hypothalamic nucleus (A), ventromedial hypothalamic nucleus (B), and paraventricular nucleus (C) as well as photomicrographs of met-enkephalin immunoreactive fibers and puncta in the medial nucleus of the amygdala (D) and central nucleus of the amygdala (E). Large enkephalin immunoreactive cells are also found in the periaqueductal gray (F).
