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[Comparison of the immunosuppressive effects of 6-mercaptopurine, azathioprine, cyclophosphamide and 036.5122 (Asta) on primary and secondary immune reactions in the mouse]
[Comparison of the immunosuppressive effects of 6-mercaptopurine, azathioprine, cyclophosphamide and 036.5122 (Asta) on primary and secondary immune reactions in the mouse]