the concentration of beta-ep increased in the hypothalamus from 31.8 +/- 1.4 ( +/- se ) ng/mg protein in nonpregnant controls to 41.4 +/- 1.8 and 39.2 +/- 1.9 during early ( 8-10 days ) and late ( 18-20 days ) pregnancy , respectively , and in the midbrain from 3.20 +/- 0.17 to 5.21 +/- 0.30 and 5.25 +/- 0.64 ng/mg protein ( p less than 0.01 ) .
C0086045
concentration
C0006104
beta-ep