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[Anti-Escherichia antibodies in the blood sera from nonimmunized donors and in preparations of human immunoglobulin].

The anti-Escherichia activity of 188 serum samples obtained from nonimmunized blood donors and 157 batches of the preparation of commercial normal human immunoglobulin were evaluated in the passive hemagglutination test with diagnostica containing E. coli antigens (serovars O2, O14, O26) and Kunin antigen, as well as Re-glycolipid Salmonella minnesota strain R595, used as sensitins. The study demonstrated that from sera of nonimmunized blood donors and from normal human immunoglobulin preparations 5-8% of batches containing anti-Escherichia antibodies to E. coli lipopolysaccharide (serovar O2) in titers of 1:640 and more could be selected. The study revealed that certain anti-Escherichia antibodies of commercial normal human immunoglobulin, to IgG.