(Q46046998)
Statements
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Sequential amplification of dihydrofolate reductase and multidrug resistance genes in Chinese hamster ovary cells selected for stepwise resistance to the lipid-soluble antifolate trimetrexate (English)
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Y G Assaraf
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A Molina
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R T Schimke
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1 November 1989
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264
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31
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18326-18334
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