 immune complexes were split into halves and half of each sample was boiled in SDS sample buffer. The other half was boiled in 0% SDS, the eluate was reconstituted with 0% Triton X-000, 000 mM NaCl, 00 mM TrisCl, pH 0.0, to a final SDS concentration of 0.0%, and subjected to reprecipitation with polyclonal antibody to 