Abstract:A non-immune reaction is known to occur between the Fc region of certain IgG subclasses and cell wall components of staphylococci (protein A) and streptococci. Pneumococci have been studied for similar activity.
Seventy-six strains of Diplococcus pneumoniae were evaluated for non-immune reactivity with γ-globulin Fc by testing their ability to agglutinate erythrocytes which were coated with sub-agglutinating quantities of anti-erythrocyte antibody. Thirty (39%) of the strains were reactive. All … Show more
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