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. 1986 Dec;54(3):798–803. doi: 10.1128/iai.54.3.798-803.1986

The use of monoclonal antibodies to detect Bacteroides gingivalis in biological samples.

P Chen, V Bochacki, H S Reynolds, J Beanan, D N Tatakis, J J Zambon, R J Genco
PMCID: PMC260240  PMID: 3781626

Abstract

Hybridomas were established which produce monoclonal antibodies specific for Bacteroides gingivalis, a pathogen associated with human periodontal disease. Spleen cells from BALB/c mice immunized with formalinized B. gingivalis were fused with Sp2/0-Ag14 myeloma cells. Of 1,050 wells with positive growth, 60 contained antibody reactive with the immunizing strain of B. gingivalis by enzyme-linked immunosorbent assay. Expansion of these cultures and cloning by limited dilution resulted in 28 clones which reacted with B. gingivalis but not with other orals and nonoral black-pigmented Bacteroides species or any of 29 representative strains of other oral bacteria. Of these 28 clones, 14 were also specific for B. gingivalis by indirect immunofluorescence microscopy. One clone, BBG-12 producing immunoglobulin G2b(kappa), was chosen to identify B. gingivalis in subgingival plaque because of its high reactivity in indirect immunofluorescence assays. This antibody reacted strongly with all 17 representative B. gingivalis strains obtained from diverse sources. Furthermore, when this reagent was applied to subgingival plaque samples, B. gingivalis was stained with high specificity and low background fluorescence, indicating that it may be useful for clinical identification of this organism.

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Selected References

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