Medicament for Malignant Tumor Treatment Methods for providing a medicament for the treatment of a malignant tumor taking into account the individually associated immune system, and also antibodies provided thereby in the use thereof, are disclosed, wherein the individual communication structure between the malignant tumor and the immune system is ascertained by determination of an expression pattern of embryonic HLA groups and by determination of a receptor type present on/in immunocompetent cells, and antibodies are provided of the type which specifically bond as ligands to the at least one determined receptor type and, as a result block or mask the receptor in such a manner that the at least one portion of the expression pattern cannot find their or can only bind there with lower action, but themselves do not inhibit the associated immunocompetent cell. Fig. 2
