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Comparative Study
. 1989 Mar 10;118(1):109-17.
doi: 10.1016/0022-1759(89)90060-4.

A two-site sandwich immunoradiometric assay of squirrel monkey (Saimiri sciureus) IgM using monoclonal antibodies

T Fandeur  1 , J Gysin, J M Postal
Affiliations
Comparative Study

A two-site sandwich immunoradiometric assay of squirrel monkey (Saimiri sciureus) IgM using monoclonal antibodies

T Fandeur et al. J Immunol Methods. .

Abstract

Nine hybrid clones secreting antibodies to squirrel monkey (Saimiri sciureus) IgM were produced and two of these (1F1G5 and 5H11B3) were selected for further studies. These non-precipitating monoclonal antibodies reacted with two distinct repetitive antigenic determinants, probably of the conformational type, only present on the native or SDS-denatured IgM molecule. Reduction of the pentamer with 2-mercaptoethanol led to complete destruction of the corresponding epitopes. 1F1G5 antibodies from ascitic fluids were used in the purification of monkey IgM by affinity chromatography. The characteristics of 1F1G5 and 5H11B3 MAbs permitted the development of a solid-phase two-site immunoradiometric assay for the measurement of IgM levels in serum specimens taken from healthy animal donors of both sexes.

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