title: Poly (L-lysine) and poly (D-lysine) conjugates of methotrexate: different inhibitory effect on drug resistant cells.
mesh_terms: D000818:Animals; D002460:Cell Line; D006224:Cricetinae; D003412:Cricetulus; D004351:Drug Resistance; D008727:Methotrexate / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D008970:Molecular Weight; D010455:Peptides / Q000494:pharmacology*; D011107:Polylysine / Q000031:analogs & derivatives / Q000378:metabolism / Q000494:pharmacology*; D013237:Stereoisomerism
chemical_list: D010455:Peptides; D011107:Polylysine; D008727:Methotrexate