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From the Biology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20014
Abstract
Guinea pig peritoneal cells were examined by a hemolytic plaque assay for their ability to produce C4 and C2. Of cells obtained by peritoneal wash or from exudates induced by starch, 12% were capable of producing C2 and 12% were capable of producing C4. Peritoneal cells induced by oil or casein showed fewer cells capable of producing C4 or C2. With a plaque assay specifically designed to detect only those peritoneal cells that were producing both C4 and C2, we found one hemolytic plaque (produced by a single cell) per 1000 peritoneal cells. Cells capable of producing both C4 and C2 were identified as large mononuclear cells. The production of C4 and C2 by these cells was a temperature dependent process.
Footnotes
1 Presented in part at the national meeting of the Federation of American Societies for Experimental Biology, April 1971, Chicago, Ill.
2 Visiting Scientist, from the School of Applied Biology, University of Bradford, United Kingdom.
3 Present address: Harvard Medical School, Children's Hospital Medical Center, Boston, Mass. 02115.
4 Reprint requests to: Dr. Borsos, National Cancer Institute, Building 37, Room 2B15, Bethesda, Md. 20014.
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