the effect of subcutaneous injections of saline ( 0.9 % nacl , 10-40 ? l/g b. wt ) to 5- and 20-day old rats on the concentrations of tyrosine ( tyr ) and tryptophan ( trp ) in the serum and the brain and on the levels of biogenic amines and their metabolites in the developing brain at 6 h p.i . is described .
C0086045
concentrations
C0006104
brain