[Effect of helium-neon laser rays on the process of regeneration of irradiated transplanted skeletal muscle].

Three series of experiments on the gastrocnemius muscle of rats were conducted. In the first series entire muscles were autografted on both hind extremities. In the second series autografting of the muscles was preceded by irradiation of both hind extremities with 1000 R. In the third series irradiation with the same dose and autografting of the muscles were followed by lazer rays treatment of both extremities for 10 days. The transplantation regeneration was studied histologically at periods of 1 week--3 months. The results showed the laser rays to stimulate regeneration depressed completely by X-irradiation. Regeneration proceeded not only in the peripheral, but also in the interior zone of the muscle, and resulted in formation of a muscle organ capable of contraction.