New protective antigen of group A streptococci.

@article{Dale1999NewPA,
  title={New protective antigen of group A streptococci.},
  author={J B Dale and E Y Chiang and S Liu and Harry S Courtney and David L. Hasty},
  journal={The Journal of clinical investigation},
  year={1999},
  volume={103 9},
  pages={1261-8}
}
  • J B Dale, E Y Chiang, +2 authors David L. Hasty
  • Published 1999 in The Journal of clinical investigation
It is widely believed that the surface M protein of group A streptococci is the predominant surface protein of these organisms containing opsonic epitopes. In the present study, we identified a new surface protein, distinct from M protein, that evokes protective antibodies. A type 18 M-negative mutant was found to be both resistant to phagocytosis in human blood and virulent in mice. The wild-type strain, but not the M-negative mutant, was opsonized by antisera against purified recombinant M18… CONTINUE READING

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