( 3 ) using monoclonal anti-iga subclass antibodies in radioimmunoassay may be hazardous in the absence of knowledge of their affinity constants and of careful control experiments : some of the antibodies were not sensitive in radioimmunoassays designed to measure the serum titer of specific iga1 and iga2 antibodies .
C0003250
monoclonal
C0003241
antibodies