Albumin-IgG complexes in human serum and plasma that inhibit blood platelet adhesion.

Abstract
Macromolecular albumin-IgG complexes were isolated from human serum and characterized immunologically. These complexes are present in plasma and appear to be normal constituents of blood. The complexes can be demonstrated in normal serum and plasma by immunoelectrophoresis and rocket immunoelectrophoresis, and by use of a 2-step radioimmunologic binding test. The albumin-IgG complexes inhibit adhesion of human platelets to glass and account for 12-16% of the total protein in serum.