Abstract
Summary
Sensitization of a strain of hemolytic streptococcus with rabbit antiserum did not increase the chemotactic attraction of these bacteria for rabbit polymorphonuclear leukocytes in vitro. Also the chemotactic response to hemolytic streptococci was no greater when leukocytes and plasma were obtained from immunized rabbits than when they were obtained from normal animals. Under these conditions, chemotaxis, unlike phagocytosis and agglutination, is not increased by specific antibodies, but appears to be rather a nonspecific response of leukocytes toward microörganisms.
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