1. Current knowledge of type-specific M antigens of group A streptococci;Lancefield;J. Immunol.,1962
2. Streptococcal vaccines revisited;Stollerman;J. Lab. Clin. Med.,1978
3. Type-specific streptococcal immunization with oral vaccine;Massell;J. Bacteriol.,1963
4. Antigenicity of the M proteins of group A hemolytic streptococci: further evidence for shared determinants among serotypes;Wittner;Infect. Immun.,1976
5. Homologous and heterologous protection of mice with group A streptococcal M protein vaccines;Wittner;Infect. Immun.,1977