Summary
The ability of rabbit immune precipitates to bind the agglutinating activating factor in the serum of patients with rheumatoid arthritis has been described and the interaction of the factor with a component of normal Fraction II is indicated. The significance of these findings with respect to the sensitized sheep cell agglutination and inhibition are discussed.
Footnotes
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↵1 Supported by USPHS Grant A-700 of the Institute of Arthritis and Metabolic Diseases, National Institutes of Health, Bethesda, and by a Fellowship and Grant from the A. D. Williams Fund of the Medical College of Virginia.
- Received April 12, 1956.
- Copyright © 1956 by The American Association of Immunologists, Inc.
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