Abstract
Crude water extract (CA) was prepared from the advanced third-stage larvae of Gnathostoma spinigerum collected from livers of naturally infected eels. The extract was partially purified by chromatofocussing column chromatography and the fraction which contained specific antigen of G. spinigerum which was an an M r 24,000 glycoprotein was used to immunize five Balb/c mice for preparing immune splenocytes. Spleen cells were collected from one mouse which showed high serum titre by indirect enzyme-linked immunosorbent assay and contained specific antibody to the M r , 24,000 antigen as checked by Western blot analysis. The spleen cells were fused with myeloma Sp2/0 cells at a ratio of 10 spleen cells per one myeloma cell using polyethylene glycol 3350 as a fusogen. Thirteen out of 174 growing polyclones (7.5%) produced antibodies to the partially purified CA fraction. Among them, two polyclones produced antibody directed to the M r 24,000 protein. These two polyclones were subjected to monocloning by limiting dilution and a monoclone GN6/24 which produced monoclonal antibody to the specific M r 24,000 protein of G. spinigerum was obtained.
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