1. Among group B hemolytic streptococci one serological type previously described as homogeneous has been shown, instead, to contain two closely related types, distinguishable by reciprocal absorption experiments. These streptococci are designated Types Ia and Ib. 2. Homologous organisms in each case absorb all antibodies from their respective antisera, while organisms of the heterologous relat...

hepatitis a is common in children and usually is a self-limiting disease.  although extrahepatic and hematological immune manifestations following acute hepatitis a virus (hav) infection have rarely been reported, they are frequently observed in other viral hepatitis. in this paper, we report the case of a 3-year-old girl who developed immune thrombocytopenic purpura (itp) and hemolytic anemia ...

We have used the complement-fixing antibody consumption ( CFAC ) test to detect small concentrations of IgG on red blood cells from patients with hemolytic anemias that are not thought to be caused by an immune mechanism. Although patients with hereditary spherocytosis, pyruvate kinase deficiency, and mechanical hemolytic anemias generally had normal concentrations of IgG bound to their red cel...

The kinetics of the hemolytic reaction effected by the hemolysin of Clostridium septicum, strain 44, has been studied with regard to the effect of concentration, temperature, and hydrogen ion concentration on the rate of the hemolytic reaction. The kinetics of hemolysis was found to resemble in several respects that of enzyme-catalyzed reactions, but differed in the absence of a clearly defined...

The serum complement system is composed of at least eight or nine interacting proteins (1, 2). The complete system is required for the reactions of immune cytolysis, immune hemolysis, bacteriolysis, and the lysis of certain tumor cells (1, 3-7). There are other complement dependent systems that do not require all nine components. The reactions of immune adherence and erythrophagocytosis require...

Auto-immune hemolytic anemia (AIHA) has an extensive differential diagnosis though Hodgkin’s lymphoma (HL) is not always an obvious diagnosis. AIHA can precede the diagnosis of HL for several years. In adults the association of AIHA and HL is more frequent in advanced stages of HL. Warm immune hemolytic anemia is mainly controlled with steroids and chemotherapy. We report a case of a patient wi...

In recent years several groups have used serological methods to demonstrate pneumococcal capsular antigens in sputum. In the present study 123 strains of alpha-hemolytic streptococci (including 97 strains from sputum or pharyngeal specimens) were tested for cross-reactions with a polyvalent antipneumococcal serum (Omniserum). Representatives of the following species were included: Streptococcus...