Movements of supernumerary hindlimbs after innervation by single lumbar spinal nerves of Xenopus laevis.

Lumbar spinal nerves S8, S9, and S10, together innervating normal hindlimbs in Xenopus laevis, were tested to cause coordinated movements in grafted hindlimbs. It could be shown that this ability is mainly restricted to lumbar nerve S9.