EXPERIMENTAL STUDIES ON HEMOLYTIC DISEASE

Studies on Heterogeneous Hemolytic Sera

Red corpuscles with nuclei contain heterogeneous sheep antigen when the organs of the same animal possess it. The sera in question contain not only heterogeneous hemolysins but also heterogeneous agglutinins. The hemolytic sera of rabbits immunized with hen red corpuscles are toxic to guinea pigs and kill them, the clinical picture being that of anaphylactic shock. Heterogeneous hemolysins are ...

Studies on the Bacteriophages of Hemolytic Streptococci

The lysis of cell walls of hemolytic streptococci by a phage-associated lysin has been described. A method is presented for preparing the lysin from Group C streptococcal phage lysates. Following lysis almost all of the cell wall carbohydrate is recovered in solution. This material has the serological reactivity, physical-chemical properties, and values for nitrogen, rhamnose, and glucosamine s...

Studies on Bacteriophages of Hemolytic Streptococci

The host ranges of bacteriophages for group A, types 1, 6, 12, and 25 and group C streptococci have been determined. The findings indicate that the susceptibility to these phages is primarily a group-specific phenomenon, although it is modified by several factors such as the hyaluronic acid capsule, lysogeny, and possibly the presence of surface proteins. Phage antibody studies indicate that wh...

Studies on Hemolytic Streptococci: II. Streptococcus pyogenes.

Studies on the Hemolytic Properties of Protamine

The basic protein protamine causes a rapid hemolysis when incubated with the red blood cells of many mammalian species. The age of the cells does not affect the process. Neutralization of the active side groups of the protamine molecule with formalinization demonstrates that a specific degree of charge is necessary for hemolysis, as more than 30 per cent of the guanidine groups must remain unre...