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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)
Sera of 42 suspect plague cases from Ovamboland, Namibia, were examined. ELISA proved more sensitive than passive haemagglutination for the detection of F1 antibody and increased positive serodiagnoses of plague by 7-42%.
Kaeng Khoi virus was recovered from bedbugs (Stricticimex parvus and Cimex insuetus) and from suckling wrinkle-lipped bats (Tadarida plicata) collected in central Thailand. The data implicate bedbugs as possible vectors of this virus.