Evidence that the extraocular motor nuclei innervate monkey palisade endings

▶ Neuronal tracer was injected into the abducens nucleus of monkey. ▶ Tracer positive axons were observed in the lateral rectus muscles. ▶ Tracer positive axons were cholinergic and established motor terminals. ▶ Palisade endings in the lateral rectus contained tracer as well. ▶ This study shows that palisade endings originate from motor nuclei.