In-Vitro Identification of Labile Toxin (Lt.) – Producing Escherichia Coli by Passive Hemagglutination Inhibition

At the time of this investigation in late 1976 the methods available for identification and quantitation of labile toxin (LT) of E. coli from traveller’s diarrhea were (1) YI adrenal tumour cell culture assay (Donta et ai, 1974; Sack et aI., 1975), (2) Chinese hamster ovary (CHO) cell culture assay…

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