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Cultures of old, well documented strains of Entamoeba histolytica (NIH:200, HK9 etc.) have been compared with "E. histolytica-like" strains and, in turn, with E. moshkovskii, E. invadens and E. chattoni. They have been grouped according to their isoenzyme patterns. The "E. histolytica-like" organisms give patterns similar to E. moshkovskii and both of these(More)
An enzyme-linked immunosorbent assay (ELISA) was developed to measure concentrations of the specific F1 antigen of the plague bacillus in biological fluids. The assay employed a monoclonal antibody to capture the antigen. Sensitivity of the assay was 0.4 ng of F1 antigen. ELISA-inhibition was used to confirm the specificity of the reactions.This assay(More)