title: Peptide lost and found: internal standards and the mass spectrometric quantification of peptides.
authors.forename: Andrew N
authors.initials: AN
authors.lastname: Hoofnagle
mesh_terms: D000803:Angiotensin I / Q000097:blood* / Q000592:standards; D002851:Chromatography, High Pressure Liquid; D006801:Humans; D009842:Oligopeptides / Q000097:blood; D010447:Peptide Hydrolases / Q000097:blood*; D040901:Proteomics; D011863:Radioimmunoassay; D012015:Reference Standards; D012083:Renin / Q000097:blood; D053719:Tandem Mass Spectrometry
chemical_list: D009842:Oligopeptides; D000803:Angiotensin I; D010447:Peptide Hydrolases; D012083:Renin