[Studies on the immunogenic activity of the Bua antigen]

The fact that 14 persons after contacting Bua-antigen did not develop anti-Bua, that 5 Bua(-) mothers with Bua(+) children did not carry anti-Bua and that 10 rabbits with a long immunization did not produce any heteroanti-Bua either, leads to the conclusion, contrary to previous researchers, that Bua-antigen has only a weak immunizing effect. Therefore, the use of the blood of such blood donors seems to have no enhanced risk of immunization for the patient.