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511. Observations on the serological typing of group N (‘lactic’) streptococci

Published online by Cambridge University Press:  01 June 2009

C. A. E. Briggs  and
L. G. M. Newland
C. A. E. Briggs
Affiliation:
National Institute for Research in Dairying, University of Reading
L. G. M. Newland
Affiliation:
National Institute for Research in Dairying, University of Reading
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Extract

1. Agglutinating type sera were prepared in rabbits for fourteen representative strains in a collection of sixty-eight group N (‘lactic’) streptococci.

2. Common type antigens, distinct for each named species, were found in strains of Str. lactis (inhibitory varieties), Str. diacetilactis and Str. cremoris.

3. Certain individuals in each of the named ‘groups’ contained additional heterologous antigens, some of which were identical to heterologous (but not the common) antigens in strains of other groups.

4. Quantitative differences in the representation of common antigens were also found.

5. Str. lactis OJ and Str. cremoris HP were shown to be mirror images of each other so far as their type antigens are concerned, containing two common type antigens in inverse proportions of 4:1 respectively. Str. lactis OJ possesses the ‘cremoris group’ type antigen, and the implications of this observation are discussed.

Type
Original Articles
Information
Journal of Dairy Research , Volume 20 , Issue 2 , June 1953 , pp. 189 - 197
Copyright
Copyright © Proprietors of Journal of Dairy Research 1953

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References

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