Lesion sites of neurons in representative T3 segment of the rat spinal cord. A: lamina of a T3 spinal segment. I–X, laminae; CC, column of Clarke; IL, intermediolateral nucleus; IM, intermedial nucleus; Liss, Lissauer's tract; LSN, lateral spinal nucleus; Pyr, pyramidal tract. B: neurons with responses to intrapericardial bradykinin (IB) in control animals. ●, Neurons excited by IB; ▲, neurons inhibited by IB. C: neurons with response to IB in gastroesophageal reflux (GER) animals.