title: Decreased feedback inhibition in a 6-(methylmercapto)purine ribonucleoside-resistant tumor.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D002286:Carcinoma, Ehrlich Tumor / Q000378:metabolism*; D002854:Chromatography, Paper; D005246:Feedback / Q000187:drug effects*; D005973:Glutamine / Q000378:metabolism; D005998:Glycine / Q000378:metabolism; D066298:In Vitro Techniques; D051379:Mice; D009705:Nucleosides / Q000378:metabolism* / Q000494:pharmacology; D009711:Nucleotides / Q000096:biosynthesis; D011687:Purines / Q000096:biosynthesis
chemical_list: D002247:Carbon Isotopes; D009705:Nucleosides; D009711:Nucleotides; D011687:Purines; D005973:Glutamine; D005998:Glycine