| abstract |
A preparation or system for inhibiting the development of malignant tumors and the formation of metastases of malignant tumor cells comprises a first composition comprising an agent selected from the group consisting of histamine, analogues thereof having H2-receptor activities, endogenous histamine releasing preparations and H2-receptor agonists, and a second composition comprising IL-2, said first and second compositions being either mixed in a preparation or provided in separate doses in an amount sufficient for treatment of tumors and metastases of malignant tumor cells. |