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Grouping of beta-haemolytic streptococci by agglutination.
  1. C S Easmon,
  2. S E Cox,
  3. A Howard


    Streptococcal grouping sera, diluted and absorbed to remove cross-reactions, were bound to staphylococci and used to group trypsinised beta-haemolytic streptococci by coagglutination. The results compared well with those obtained using the Phadebact streptococcal grouping kit. The same sera bound to staphylococci without prior dilution and absorption could be used to group enzyme extracts of haemolytic streptococci by slide agglutination, the results again comparing favourably with those of the Phadebact kit.

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