1. Brown, R. W.: Staphylococcic antitoxins in dairy cattle. 1. A review of the literature. Amer. J. vet. Res. 1960, 21, 1006–1014.
2. Derbyshire, J. B.: Immunity in bovine mastitis. Vet. Bull. (Weybridge) 1962, 32, 1–10.
3. Edwards, S. J. & G. S. Smith: Staphylococcal antitoxin in the blood and milk of cattle. J. comp. Path. 1959, 69, 208–215.
4. Fossum, K.: Proteolytic enzymes and biological inhibitors. II. Naturally occurring inhibitors in sera from different species and their effect upon proteolytic enzymes of various origin. Acta path, microbiol. scand. Section B. 1970, 78, 605–618.
5. Gudding, R.: An agar diffusion method for the determination of antibodies against Staphylococcus aureus deoxyribonuclease. Acta vet. scand. 1977, 18, 480–493.