Fos expression in the trigeminal sensory nuclei after a chemical lesion of the lower lip mucosa.

摘要: C-fos containing neurons were investigated in the trigeminal sensory nuclear complex and dorsal horns of cervical spinal cord (C1-C2) rat after a chemical noxious stimulus was applied to lower lip mucosa. Numerous labelled neuronal nuclei detected dorsolateral area caudal half nucleus interpolaris, Rexed's laminae I-IIo dorsomedial caudalis rostral C1. A few c-fos-labelled observed IIi V. No Fos expression oral principal nuclei.