title: [Thrombocytic reactions in experimentally induced neoplasms (author's transl)].
abstract: Strain XVII mice with Graffi virus induced leukemia of various hematological types showed a pronounced thrombocytopenia which was severe in erythroblastic leukemia and weaker in lymphatic ones. The thrombocytic reactions shortly following Friend and Rauscher virus applications and occurred 3 weeks after birth in AKR mice are not found in Graffi virus system. A significant preleukemic thrombocytopenia did appear only 8 weeks after Graffi virus infection. The origin of both the preleukemic and the secondary thrombocytic reactions are discussed. (XVII X AKR) F1 hybrids, neonatally treated with N-nitroso-N-methylurea (NMU), resulted also in a decline in the number of thrombocytes after manifestation of leukemia. In contrast to the expection following NMU treatment a preleukemic thrombocytopenia appeared as in viral leukemogenesis too. The possibility of a co-operation of oncogenic viruses in chemical carcinogenesis is considered.
mesh_terms: D000818:Animals; D009052:Leukemia Virus, Murine; D007942:Leukemia, Experimental / Q000097:blood / Q000139:chemically induced / Q000209:etiology; D051379:Mice; D008815:Mice, Inbred Strains; D009374:Neoplasms, Experimental / Q000097:blood* / Q000139:chemically induced / Q000209:etiology; D009607:Nitrosourea Compounds; D011120:Polyomavirus; D013921:Thrombocytopenia / Q000209:etiology*
chemical_list: D009607:Nitrosourea Compounds
vernacular_title: Thrombozytenreaktionen bei experimentell induzierten Neoplasien.