The recovery of the ultrastructure of hyperchromic host neurons under the influence of fetal neurotransplants.

Fetal neocortical transplants placed into a previously prepared cavity in the cortex, of adult animals inhibited destructive processes in host neurons surrounding the place of injury. This was demonstrated by a gradual reduction in the number of hyperchromic and shrunken host neurons and the recovery of the ultrastructure of dystrophic cells which die as a result of neuronophagia or sclerosis in the absence of the transplants.