Quest of the Golden Ape by Stephen Marlowe

Although once mighty Ofridia of Tarth and certainly the nations of Earth had outstripped Bylanus' world in the physical science, the planet of the pink and green suns was supreme in biology. Thus had it needed Portox' help, a hundred Earth-Tarthian years before, when run-down entropy threatened its very existence. On the other hand, through biology, the science of Bylanus' world had come a long way in the conquest of death and destroyed human tissue. So it was that with some faint ray of confidence Bylanus brought the two broken bodies to the single large city of his park-like planet. There, tenderly, he left them in the care of specialists at the regeneration station, and began his long vigil.

. sensation and movement.