[Fate of a fragment of madrepore coral skeleton implanted in the diaphysis of long bones in dogs].

A madrepore fragment implanted into Dog's long bone diaphysis is quickly vascularized and then progressively resorbed; this is due to an osteoclasic action. At the same time, in replacement of resorbed coral, cancellous bone grows which progressively let the place to compact bone. Injections of diamox given to formerly implanted Dogs, slacken the resorption of coral implants which seems to be the work of carbonic anhydrase contained in osteoclasts.