Eugene N. Fox

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It has been reported previously that the synthesis of the Mprotein antigen of group A hemolytic streptococci is dependent upon the products of enzymatically hydrolyzed protein (2). This latter material, of which both dialyzable peptides and nondialyzable polypeptides are active constituents, is required in addition to glucose and free amino acids for the(More)
Alum-precipitated and soluble, purified M protein vaccines were prepared from type 3 and type 12 group A Streptococcus. Adult volunteers were assigned to one of three groups: group I received placebo by both parenteral and intranasal routes; group 2 received vaccine parenterally (either type 3 or type 12) and placebo intranasally; and group 3 received(More)
Highly purified M proteins were used for determining cutaneous hypersensitivity and type-specific circulating antibodies in normal adults and infants. 80% of 91 adults and 8% of 59 infants exhibited a transient delayed cutaneous reaction to at least two of types 12, 14, and 24 M proteins. Antibodies assayed by passive hemagglutination were observed in 90%(More)
Healthy adult male volunteers were immunized with purified M protein from Group A streptococci. Type 1. The vaccine was administered subcutaneously as an aluminum hydroxide-precipitated antigen in three montly doses. Control subjects received a placebo of the aluminum hydroxide adjuvant. To test the efficacy of the immunization, vaccinees and controls were(More)
Fox, Eugene N. (University of Chicago, Chicago, Ill.). Intracellular M protein of group A Streptococcus. J. Bacteriol. 85:536-540. 1963.-A heat-labile M protein antigen in protoplasts of a type 14 strain of group A Streptococcus has been demonstrated in a soluble form in the cytoplasm, and also bound to the protoplasmic membrane. When trypsinized whole(More)
A micro complement fixation assay was devised to measure the type-specificity of anti-M antibody. Unabsorbed sera were from rabbits hyperimmunized with heat-killed streptococci and from humans with naturally occurring antibody or immunized with purified M protein vaccines. These sera fixed complement only in the presence of homologous M proteins (serotypes(More)