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me·thi·o·nine

n :  a crystalline sulfur-containing essential amino acid C5H11NO2S that occurs in the L-form as a constituent of many proteins (as casein and egg albumin), that is important esp. as a source of sulfur for the biosynthesis of cystine and as a source of methyl groups for transmethylation reactions (as in the biosynthesis of choline, creatine, and adrenaline), and that is used as a dietary supplement for human beings and their domestic mammals and poultry and in the treatment of fatty infiltration of the liver - see MEONINE  .
 
 

 
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North Big Horn Hospital District (Lovell, Wyoming - Big Horn County)