Preparation of NEM-derivatized cysteine and GSH internal standards The N-ethylmaleimide (NEM) derivatized isotope labeled [ 13 C 3 , 15 N]-cysteine-NEM and [ 13 C 2 , 15 N]-GSH-NEM were prepared by derivatizing the [ 13 C 3 , 15N]-cysteine and [ 13 C 2 , 15 N]-GSH standards with 50 mM NEM in 10 mM ammonium formate (pH = 7.0) at room temperature (30 min) as previously described 95
Becker, J
Green et al 26 Severe clinical abnormalities should be treated intensively with B 12 , cyanoB 12 or hydroxyB 12 : HydroxyB 12 is commonly used in Europe, often at intervals of 23 months, as it seems to have better retention than cyanoB 12
Its a fair question, and one thats being asked by many people within the IBD community, according to Alan Moss, MD, the chief scientific officer at the Crohns & Colitis Foundation and a professor of gastroenterology at Boston University's Chobanian and Avedisian School of Medicine
rotate injection sites systematically