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. 2002 Nov 12;14(2):115–124. doi: 10.1016/0378-1135(87)90003-4

Antigenic variation of porcine transmissible gastroenteritis virus detected by monoclonal antibodies

T Hohdatsu a, Y Eiguchi a, M Tsuchimoto a, S Ide a, H Yamagishi a, M Matumoto b
PMCID: PMC7117515  PMID: 2444027

Abstract

Mouse myeloma cells (SP2/O) were fused with spleen cells from BALB/c mice immunized with detergent-solubilized antigen of purified virus, and 21 monoclonal (MC) antibodies reactive in enzyme-linked immunosorbent assay with the TO-163 strain of porcine transmissible gastroenteritis (TGE) virus were obtained. Of these MC antibodies, 14, 6 and 1 were IgG1, IgG2a and IgM, respectively. All of the MC antibodies contained light chains of the kappa type. Of these MC antibodies, 8 were found to have neutralization (NT) activity against the TO-163 strain. Comparison of 7 strains of TGE virus by NT tests using our panel of MC antibodies confirmed their close antigenic relationships, but also revealed the occurence of distinct antigenic differences. These results suggest that there may be at least 6 different epitopes involved in NT reaction on the virion of the TO-163 strain. This notion was confirmed by the competitive binding assay.

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