Gene amplification and drug resistance.
D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D002875:Chromosomes / Q000378:metabolism*; D006224:Cricetinae; D003412:Cricetulus; D004247:DNA / Q000096:biosynthesis*; D004351:Drug Resistance; D005260:Female; D005784:Gene Amplification / Q000187:drug effects; D008727:Methotrexate / Q000494:pharmacology; D010053:Ovary; D014176:Protein Biosynthesis; D012333:RNA, Messenger / Q000378:metabolism; D014158:Transcription, Genetic; D014178:Translocation, Genetic
D012333:RNA, Messenger; D004247:DNA; D008727:Methotrexate