[Antigenic characteristics of immunoglobulin preparations]

A comparative study of the content of serum protein antigens in 156 batches of human immunoglobulin preparations, produced from placental material and donor plasma in the USSR and Bulgaria, has been made by means of immune electrophoresis. The results thus obtained indicate that immunoelectrophoretic analysis may be used for the additional characteristic of the antigenic structure of immunoglobulin preparations, as well as for evaluating the degree of the purification of immunoglobulin from nonspecific serum proteins in the process of the production of commercial preparations.