the concentration of p ( 38.4 +/- 6.9 and 22.1 +/- 2.9 ng/g , mean +/- s.d. , in anterior and posterior brain , respectively ) exceeded that of ps in brain ( 15.8 +/- 3.0 and 5.7 +/- 2.1 ng/g in the same fractions ) and largely those of p and ps in plasma ( 1.3 +/- 0.2 and 1.4 +/- 0.3 ng/g , respectively ) .
C0086045
concentration
C0006104
brain