title: Dual origin of  -aminoisobutyric acid, a thymine catabolite.
mesh_terms: D000621:Aminoisobutyric Acids / Q000096:biosynthesis* / Q000302:isolation & purification; D000818:Animals; D002247:Carbon Isotopes; D002855:Chromatography, Thin Layer; D004247:DNA / Q000378:metabolism; D005561:Formates; D008297:Male; D008715:Methionine; D012313:RNA / Q000378:metabolism; D051381:Rats; D012588:Scintillation Counting; D013941:Thymine / Q000378:metabolism*; D014316:Tritium
chemical_list: D000621:Aminoisobutyric Acids; D002247:Carbon Isotopes; D005561:Formates; D014316:Tritium; D012313:RNA; D004247:DNA; D008715:Methionine; D013941:Thymine