Increased methotrexate resistance and dhfr gene amplification as a consequence of induced Ha-ras expression in NIH 3T3 cells.

Abstract

Oncogene activation and loss of tumor suppressor genes are known to play a role in tumor initiation as well as its progression. The potential roles of these genes in perturbation of genome stability has become a major interest. To better understand the relationship between expression of an oncogene and genetic instability, we have studied a cell line… (More)

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