[Oxygen multistep therapy and cancer. New perspectives in cancer immunology (author's transl)]

After discussing the relationships between efficacy of body-own defense, arterial pO2 level and manifestations of both primary tumors and metastases, correlations between immune state and oxygen transport into the entire body are described on the basis of experimental findings. As a conclusion drawn from these results, the precise treatment schedule of a tumor and metastases multistep prophylaxis utilizing immune stimulation by means of derivatives of cyano-ethyl urea and fortification of oxygen transport into tissues is given.