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In Vitro Hemolysis of Autologous Erythrocytes Caused by Immune Murine Spleen Cells and Spherules of the Fungus Coccidioides Immitis¹

From the Department of Medical Microbiology, School of Medicine, University of California, Davis, California

Abstract

This communication describes an in vitro system wherein mouse erythrocytes are lysed in the presence of spherules of the fungus Coccidioides immitis and spleen cells from syngeneic mice immunized with a variety of antigens. The antigens include: tobacco mosaic virus in complete Freund's adjuvant (CFA), CFA alone, separate components of CFA, sheep erythrocytes, and allogeneic tumor. Spleen cells from mice sublethally infected with C. immitis are also capable of participating in this response. The lytic phenomenon, which does not require complement, is dependent upon the number of spleen cells per culture, the number of spherules per culture, the time of culture incubation, the amount of antigen injected into the animal and the time after immunization at which spleen cells are recovered. Live spherules or spherules killed with heat, with dimethylsulfoxide, or with formalin were effective participants, together with immune spleen cells, in the lytic reaction.

Footnotes

¹ This work was supported in part by United States Public Health Service Grant AI-12158 and by United States Public Health Service Postdoctoral Fellowship (to D.L.D.) 1 F22 AI03171-01.