Brucella antigens capable of sensitizing normal and tanned sheep red blood cells for indirect hemagglutination were compared with antigens involved in agglutination, gel diffusion, and immunoelectrophoresis. Hyperimmune rabbit sera, before and after absorption with various antigenic preparations from smooth and rough B. abortus, were used in the tests. Normal erythrocytes could be sensitized wi...

BACKGROUND AND OBJECTIVE Brucellosis is a zoonotic disease of worldwide distribution and has great economic importance. Despite its control in many countries, it remains endemic in Iran. Brucellosis was investigated in many high risk occupational groups; however, few studies on the prevalence of brucellosis among blood donors are available. To determine the seroprevalence of brucellosis antibod...

When 11-day mice are fed with homologous or heterologous antibodies or with heterologous y-globulin, the maximum concentration of these proteins in their sera is reached 2 h later, irrespective of the amount or specificity of the proteins administered, or of the final con­ centration achieved. The relation between y (= relative titre of antibody, or concentration of heterologous y-globulin, att...

BACKGROUND AND PURPOSE Widal test is frequently applied for the detection of Salmonella agglutinins to diagnose Salmonella enterica serotype Typhi infection. There are however a number of controversies challenging the diagnostic utility of this test. This study was performed to determine the prevalence of Salmonella agglutinins in patients with other febrile illnesses and healthy blood donors. ...

(w ww .m ed kn ow .co m) . The results are shown in the Table. The exponential character of turbidity increase was less sensitive yet a more speciÞ c screening criterion, thus it is suitable for preliminary conÞ rmation of signiÞ cant bacteriuria. The non-speciÞ ed turbidity increase estimation2 has a high negative predictive value and is suitable (just like the biochemical screening)1,3 for pr...