standard hrp histochemistry revealed retrogradely labeled neurons in the nucleus of the medial longitudinal fasciculus , midbrain tegmentum , red nucleus , optic tectum , mesencephalic trigeminal nucleus , granule cell layer of the cerebellum , superior , middle , and inferior medullary reticular nuclei , magnocellular and descending octaval nuclei , region of the descending trigeminal tract , solitary complex , and the margins of the spinal gray matter anterior to the spinal hrp implant .
C0007634
cell
C0007610
nuclei