1. Enhancing effect of type-specific antistreptococcal A antibodies on emergence of streptococci rich in M protein;Becker;Proc. Soc. Exp. Biol. Med.,1967
2. Changes in virulence, M protein and IgG Fc receptor activity in a type 12 group A streptococcal strain during mouse passages;Burova;Acta path. microbiol. scand. Sect. B,1980
3. Quantitation of the uptake of human IgG by some streptococci groups A, B, C and G;Christensen;Acta path. microbiol. scand. Sect. B,1974
4. Interaction of streptococci with the Fc fragment of IgG;Christensen;Acta path. microbiol. scand. Sect. C,1976