during infusion into rats with a portacaval shunt of either ammonium ( nh4+ ) salts alone or nh4+ salts combined with the three branched-chain amino acids ( bcaas ) in equimolar quantities , we assessed neurologic function and measured plasma and brain ammonia and amino acid levels and the brain content of amine neurotransmitters and their metabolites .
C0006104
brain
C0423896
content