[DNA-ase I activity in the DNA-ase I-inhibitor system].

An increase in the DNase I activity was revealed in the serum of mice after intraperitoneal injection of different antigens. This reaction is related to the antigen nature and is dissimilar in mice of different strains. The increased activity of the inhibitor in the spleen of DBA/2 and BALB/c mice was discovered after intravenous injection of bovine DNase I. A potential role of serum DNase I in the system DNase I-inhibitor is discussed.