title: Mutant human fibroblast clones able to grow on homocysteine instead of cyst(e)ine.
mesh_terms: D000476:Alkanesulfonates; D002460:Cell Line; D002999:Clone Cells; D003124:Colorimetry; D003470:Culture Media; D003540:Cystathionine / Q000378:metabolism; D003553:Cystine / Q000378:metabolism*; D004171:Diploidy; D005347:Fibroblasts / Q000201:enzymology / Q000378:metabolism*; D006710:Homocysteine / Q000378:metabolism*; D006801:Humans; D007621:Karyotyping; D008190:Lyases / Q000378:metabolism; D009153:Mutagens; D009154:Mutation; D009604:Nitrosoguanidines; D012867:Skin; D013237:Stereoisomerism
chemical_list: D000476:Alkanesulfonates; D003470:Culture Media; D009153:Mutagens; D009604:Nitrosoguanidines; D006710:Homocysteine; D003540:Cystathionine; D003553:Cystine; D008190:Lyases