our results , based on anterograde autoradiographic experiments with [ 3h ] leucine injections in the c1 , c2 , c6 , and c8 segments , suggest that propriospinal pathways to the ctm motor nucleus originating in the cervical cord do not exist , although these propriospinal projections are very strong to all other motoneuronal cell groups surrounding the ctm motor nucleus .
C0007634
cell
C0007610
nucleus