title: Letter: Historical observation in maple syrup urine disease.
mesh_terms: D002262:Carboxy-Lyases / Q000172:deficiency; D005260:Female; D005347:Fibroblasts / Q000201:enzymology; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D007231:Infant, Newborn; D007962:Leukocytes / Q000201:enzymology; D008297:Male; D008375:Maple Syrup Urine Disease / Q000201:enzymology / Q000235:genetics*; D012867:Skin / Q000201:enzymology
chemical_list: D002262:Carboxy-Lyases