rheumatoid factors (rf) are autoantibodies with specificity for the fc portion of human igg. production of rf is a characteristic feature of rheumatoid arthritis (ra) and is detectable in high titer in about 90% of these patients. in this study, we measured total igm, iga, igmrf and igarf in serum and synovial fluid of 45 ra patients by elisa and the results were compared with those obtained by...

background and objectives : 300 pseudomonas aeruginosa strains were isolated from hospitalized patients in iran. using international antigenic typing system (iats) antibodies, all strains were classified into 16 serotypes while serotype 14 was not identified among the 17 known serotypes. to evaluate the rate of cross-reactivity between o- antigenic determinants, monospecific polyclonal antibodi...

SYNOPSIS Fibrinogen antigens were measured either with an agglutination inhibition method (using latex particles coated with fibrinogen; Diagen test) or with a direct agglutination technique (using latex particles coated with a mixture of anti-D and anti-E antibodies; Thrombo-Wellcotest). Both methods were compared with the tanned red cell haemagglutination inhibition immunoassay (TRCHII) durin...

introduction: the suspected water samples contaminated with legionella were enriched with acanthamoebae. small numbers of bacteria (not detectable by culture) can be multiplied in amoebae up to culturable level in co-culture condition. the conventional culture method for legionnaires' disease bacterium always suffers from low sensitivity. this co-culture method can significantly improve culture...

We report an evaluation of the performance characteristics, accuracy, and sensitivity of five test kits designed to detect human choriogonadotropin (hCG) in urine: "Sensitex" (latex agglutination inhibition), "beta-Neocept" (hemagglutination inhibition), "Duoclone" (direct agglutination), "Tandem-Visual HCG" (enzyme immunoassay), and "Sensichrome" (enzyme immunoassay). For comparison, all speci...