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. 1979 Feb;9(2):274–279. doi: 10.1128/jcm.9.2.274-279.1979

Serological study of trichloroacetic acid extracts of Bacteroides fragilis.

R L Abshire, V R Dowell Jr, G L Lombard
PMCID: PMC273006  PMID: 107193

Abstract

Immunodiffusion techniques were used on trichloroacetic acid extracts from 10 strains of Bacteroides fragilis in detecting precipitating antibodies against this species in immune rabbit sera. Species and even strain specificities were observed in these precipitin reactions. Multiple antigens were detected in the extracts from some strains, whereas only one precipitin band per extract developed during agar-gel diffusion tests of others. The antigen extracts were found to be both heat stable and resistant to hydrolysis by alpha-chymotrypsin. Four serological patterns were demonstrated in homologous and heterologous reactions with the B. fragilis. antigen-antibody systems used. The results showed that some strains were serologically distinct from others, indicating that the strains tested are of more than one serotype.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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