title: A modified lithium buffer system for analysis of acidic and neutral amino acids in physiological fluids.
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D001216:Asparagine / Q000032:analysis; D001774:Blood Chemical Analysis; D001826:Body Fluids / Q000032:analysis*; D002021:Buffers; D002951:Citrates; D003553:Cystine / Q000032:analysis; D005973:Glutamine / Q000032:analysis; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007930:Leucine / Q000032:analysis; D008094:Lithium; D008722:Methods; D014556:Urine / Q000032:analysis
chemical_list: D000596:Amino Acids; D002021:Buffers; D002951:Citrates; D005973:Glutamine; D003553:Cystine; D001216:Asparagine; D008094:Lithium; D007930:Leucine