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Lancefield's classification

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A serologic classification of bacteria of haemolytic streptococci into groups based on their specific carbohydrate antigen. Groups A through O have been established. All strains pathogenic to man belong in group A.


  • R. C. Lancefield:
    The antigenic complex of Streptococcus haemolyticus. I. Demonstration of a type-specific substance in extracts of Streptococcus heamolyticus.
    Journal of Experimental Medicine, 1928, 47: 481-491.
  • R. C. Lancefield:
    A serological differentiation of human and other groups of heamolytic streptococci.
    Journal of Experimental Medicine, New York, 1933, 57: 571-595.

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