this depressor response could be inhibited by naltrexone , 2 mg/kg i.v. , by an antiserum against beta-endorphin , 100 nl injected directly into the ipsilateral nucleus tractus solitarii , or by deafferentation of the dorsal vagal complex ( nucleus tractus solitarii and dorsal vagal nucleus ) by an ipsilateral , dorsolateral knife-cut of the medulla oblongata .
C0175518
nucleus tractus solitarii
C0025148
medulla oblongata