Chorda tympani nerve terminal field within NTS subdivisions: coronal sections. A, The chorda tympani nerve terminal field of an adult cut rat was visualized in the coronal plane. B, The terminal field was constrained to the rostral central and rostral lateral subdivisions. C, Myelin-stained sections show the location of the NTS relative to other brainstem structures. M, Medial subdivision of the NTS; RC, rostral central subdivision of the NTS; RL, rostral lateral subdivision of the NTS; V, ventral subdivision of the NTS; 4V, fourth ventricle; FLM, medial longitudinal fasciculus; DPGi, dorsal paragigantocellular nucleus; MVeMC, medial vestibular nucleus magnocellular; MVePC, medial vestibular nucleus parvocellular; Pr, principal nucleus; SpVe, spinal vestibular nucleus; D, dorsal; L, lateral. Scale bars: 200 μm.