1. Drug response, dihydrofolate reductase and cytogenetics of amethopterin-resistant Chinese hamster cells in vitro;Biedler;Cancer Res.,1972
2. Two different species of dihydrofolate reductase in mammalian cells differentially resistant to amethopterin and methasquin;Albrecht;Cancer Res.,1972
3. Cytogenetics of mouse leukemia L1210. I. Association of a specific chromosome with dihydrofolate reductase activity in amethopterin-treated sublines;Biedler;Cancer Res.,1965
4. Cellular resistance to actinomycin D in Chinese hamster cells in vitro: cross-resistance, radioautographic and cytogenetic studies;Biedler;Cancer Res.,1970
5. Hybridization of actinomycin D- and amethopterin-resistant Chinese hamster cells in vitro;Sobel;Cancer Res.,1971