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The Journal of Immunology, Vol 130, Issue 1 1-3, Copyright © 1983 by American Association of Immunologists

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A monoclonal antibody from infected mice to a Schistosoma mansoni egg proteinase

MH Dresden, CK Sung and AM Deelder

A number of monoclonal antibodies were obtained by fusion of SP2/0 myeloma cells and spleen lymphocytes from mice infected with Schistosoma mansoni. These antibodies were tested for their ability to inhibit acidic, thiol-dependent proteinases previously isolated from Schistosoma mansoni eggs and adult worms. One of the monoclonal antibodies isolated inhibits egg proteinase activity measured in vitro with the use of a low m.w. synthetic substrate. This antibody, which is an IgG1 isotype, does not appreciably inhibit an acidic, thiol- dependent proteinase obtained from the adult stage of Schistosoma mansoni. Immunocytochemical methods with the monoclonal antibody have been used to localize the egg proteinase within a set of "penetration" glands in the unhatched miracidium.




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