Overproduction of dihydrofolate reductase and gene amplification in methotrexate-resistant Chinese hamster ovary cells von Flintoff, W F, Weber, M K, Nagainis, C R, Essani, A K, Robertson, D, Salser, W

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Transport of methotrexate in chinese hamster ovary cells: A mutant defective in methotrexate uptake and cell binding von Flintoff, Wayne F., Nagainis, Charles R.

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A rapid quantitative capillary tube enzyme immunoassay for human chorionic gonadotropin in urine von Nagainis, Peter A., Nakagawa, Carol H., Baron, Sandra L., Fuller, Steven A., Chandler, Howard M., Hurrell, John G.R.

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