In mammals, the Bötzinger complex (BötC) is a group of neurons located in the rostral ventrolateral medulla, and ventral respiratory column. In the medulla, this group is located caudally to the facial nucleus and ventral to nucleus ambiguus.[1][2]
^Otake K, Sasaki H, Mannen H, Ezure K (1987). "Morphology of expiratory neurons of the Bötzinger complex: an HRP study in the cat". J Comp Neurol. 258 (4): 565–79. doi:10.1002/cne.902580407. PMID3034989.