[Anticomplementary activity of serums from subjects affected by neoplastic processes]

The Author studied the anticomplementary activity of 46 serums from patients affected by different tumours. The research has been positive on 49% of patients. Negative nearly constantly in mieloid and lymphatic leukemias. The highest percentage of activity was observed in the serums of patients affected by pulmonary cancers, histioleukemias and myelomas. Have been also studied the factors III-IV of the complement.