1. Studies on a protective antigen produced in vitro from Bacillus anthracis; medium and methods of production;BELTON F. C.;Brit. J. Exptl. Pathol.,1954
2. Immunity to anthrax; protective antigen present in cell-free culture filtrates;GLADSTONE G. P.;Brit. J. Exptl. Pathol.,1946
3. Synthesis of glutamic acid and glutamyl polypeptide by Bacillus anthracis;USEWRIGHT R. D.;J. Bacteriol.,1950
4. The colorimetric determination of phosphorus;KING E. J.;Biochem. J. (London),1932
5. Protein measurement with the Folin phenol reagent;LOWRY H.;J. Biol. Chem.,1951