Purification and Isolation of Rheumatoid Factor

Abstract
A new method for the purification of the rheumatoid factor is presented. A euglobulin fraction of serum was chromato-graphed on DEAE cellulose. The resultinting fraction was eluted from CMC cellulose with 0.1 [image] phosphate pH 4.4 to yield a preparation containing more than 90% of a component with a sedimentation coefficient of 18.8. Relative specific activities at successive stages of purification were determined. Concentration dependence data for the sedimentation coefficient were obtained.