[The phenomenon of the replication of ontogenetic immaturity in adult cats caused by the cerebrospinal fluid of kittens].

Studies have been made on the electrical activity of muscles in the hindlimbs in kittens and adult cats before and after injection the liquor from 10-, 21-day and 1-month kittens into the lumbar part of the spinal cord. Analysis was made of the EMG at rest and that of the evoked reactions. It was shown that EMG of adult cats after injection of kitten liquor attained the pattern typical of the donor. The data obtained indicate the presence in kitten liquor of biologically active substances which account for the level of regulatory relationships. Transfer of these substances to adult animals results in the formation of a new level of coordinations of movements which corresponds to immature organism.