Effect of isolation induced aggression in mice on serum creatine kinase

It is known that the serum creatine kinase increases as a result of different conditions and that isolation in male mice induces aggressive behaviour after regrouping. The levels of serum creatine kinase were studied in isolated and in regrouped male albino mice. A considerable increase of creatine kinase was found in regrouped male mice fighting for different hours. Further studies are needed to prove whether these results are due to isolation, aggression or motor activity.