Retrograde projections to a discrete apneic site in the midline medulla oblongata of the rat
Keywords: CeA, Central nucleus of amygdala; CTB, Cholera toxin B subunit; CVLM, Caudal ventrolateral medulla; dlPAG, Dorsolateral periaqueductal grey; DMH/DHA, Dorsomedial nucleus of hypothalamus/dorsal hypothalamic area; dmPAG, Dorsomedial periaqueductal grey; DRN