title: Variant human diploid fibroblast clones able to grow in homocysteine in place of cyst(e)ine.
mesh_terms: D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D002999:Clone Cells; D003545:Cysteine / Q000378:metabolism*; D003553:Cystine / Q000378:metabolism*; D004171:Diploidy; D005347:Fibroblasts / Q000187:drug effects; D014644:Genetic Variation; D006710:Homocysteine / Q000378:metabolism* / Q000494:pharmacology; D008698:Mesylates / Q000494:pharmacology; D008769:Methylnitronitrosoguanidine / Q000494:pharmacology; D009154:Mutation
chemical_list: D008698:Mesylates; D006710:Homocysteine; D008769:Methylnitronitrosoguanidine; D003553:Cystine; D003545:Cysteine