retrograde tracing , morphological and electrophysiological studies indicated the following : 1 ) a great number of neurons , located bilaterally , between c3 and c7 in most laminae of the grey matter , extended axons into the pn grafts , 2 ) a lesser number of neurons regenerated up to the reconnected muscle , but most of them were typical motoneurons , 3 ) neuromuscular junctions were formed in ectopic locations , around the tip of the grafted nerve , and at the sites of original endplates , 4 ) these junctions were functional and formed by axons that had regenerated into the pn bridges , as muscle contraction was obtained by electrical stimulation of the grafted nerves , 5 ) they were proved to be cholinergic since endplate potentials , evoked by stimulating the pn graft , were suppressed by curare .
C0027882
neurons
C0004461
axons