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[Antimutagenic effectiveness of pyrimidine derivatives in lesions of the bone marrow cell chromosome apparatus in mice infected with measles or poliomyelitis viruses].

It is determined that the number of marrow cells with cytogenetic disturbances grows in mice infected with measles or polymyelitis viruses. The level of marrow cells with disturbances is much lower in the mice fed with methyluracilum or pentoxylum before infection. The level of deteriorated cells also decreases when the mice were fed with the mentioned drug after infection. In an analogous experiment with polymyelitis viruses the antimutagenic effect was not determined.