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[Serodiagnosis of a chronic pyelonephritis using common antigen].

By means of the indirect haemagglutination reaction we examined for antibodies against the enterobacterial common antigen 113 sera of blood-donors and 588 sera of patients with chronic pyelonephritis. It could be shown that this antigen is not suitable for the proof of antibodies and thus for the serodiagnostics of a chronic pyelonephritis. Also the combination with the results of the antibody determination against the O-antigen of the homologous strain of the urine is without diagnostic relevance.