Preliminary results of the isolation of chicken FcIgG receptor

Two methods were used to isolate lymphocyte receptor Fc fragment of chicken IgG salt extraction or detergent solubilization of previously radioiodinated cell membranes. Both crude preparations showed Fc receptor activity, assayed by EA rosette test and by binding to IgG-Sepharose. So far attempts to purify of the receptor by affinity chromatography did not give an active preparation.