1. Mechanisms of resistance;Brockman,1975
2. The chromosomal status of drug resistant sublines of mouse leukemia L1210;Bieselle,1959
3. Selection of chromosomal variant in amethopterin-resistant sublines of leukemia L1210 with increased levels of dihydrofolate reductase;Biedler;J Natl Cancer Inst,1963
4. Association of increased dihydrofolate reductase levels and chromosome alteration in amethopterin-resistant sublines of leukemia L1210;Schrecker;J Natl Cancer Inst,1963
5. Cytogenetics of mouse leukemia L1210. I. Association of a specific chromosome with dihydrofolate reductase activity in amethopterin-treated sublines;Biedler;Cancer Res,1965