Abstract
Two hybrid hybridomas secreting polymeric bispecific antibodies to human chorionic gonadotropin and calf intestinal alkaline phosphatese were produced by fusion of IgA- and IgM-secreting mouse hybridomas. Both hybrid antibodies were purified from ascitic fluid by size exclusion chromatography. An IgM-like fraction was shown to exhibit bispecific activity. Bispecificity was completely lost following mild reduction and alkylation. Both bispecific antibodies were used to develop a sensitive enzyme immunoassay for hCG.
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