1887

Abstract

SUMMARY

Monoclonal antibodies were raised to the anaerobic curved rods, subsp. NCTC 11656, subsp. NCTC 11657 and NCTC 11658. Three antibodies reacted with the two subspecies of and, when used in combination against clinical isolates, showed 100% sensitivity and specificity in immunofluorescence studies. Immunoblotting showed that two of these antibodies reacted with an epitope on a protein which had an electrophoretic mobility corresponding to a Mr of 75 Kda in the absence of a reducing agent and 82 Kda in its presence in both type strains and in clinical isolates. The third antibody reacted with an epitope in type strains which had a mobility corresponding to 75 Kda and was unaffected by a reducing agent. However, in clinical isolates the epitope was present on a protein of 75 Kda or 71 Kda, or on both. A fourth antibody showed reactivity with NCTC 11658 alone, but only 6 (24%) of 25 clinical isolates gave positive results by immunofluorescence. The epitope is believed to be present on a protein of < 90 Kda. All four antibodies were shown by immunogold staining to be directed against epitopes exposed on the cell surface.

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1989-10-01
2022-08-16
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