1. S. Ya. Kaplanskii, O. B. Kuzovleva, and V. D. Uspenskaya, Biokhimiya, No. 4 (1956), p. 469.
2. A. P. Konikov, Zh. Mikrobiol., No. 1 (1953), p. 57.
3. L. Anigstein, D. M. Whitney, and W. Barnes, Tex. Rep. Biol. Med., Vol. 12 (1954), p. 3.
4. W. Boyd, Fundamentals of Immunology [Russian translation], Moscow (1949).
5. S. V. Boyden, J. Exp. Med., Vol. 93 (1951)., p. 107.