Testosterone (T) Dihydrotestosterone (DHT)
(nM)b
 1.10 ± 0.28 c (nd =12 )
(ng/gwet weight)
0.32 ± 0.08
(nM)
0.62 ± 0.16 (n = 7)
(ng/g wet weight)
0.18 ± 0.05
(A) Hippocampal androgens (T and DHT) in femalea
Female (n = 3)   Male (n = 3)
(nM)
16.4 ± 2.3
(ng/gwet weight)
5.2 ± 0.7
(nM)
1.00 ± 0.71
(ng/g wet weight)
0.32 ± 0.23
(B) Hippocampal Allo in female and male
aAll female samples were prepared at Proestrus stage
bConcentration in nM is calculated using the average volume of 0.124 mL for one whole hippocampus that has 0.124 ± 0.002 g wet weight (n=44). We assumed that tissue having 1 g of wet weight has an approximate volume of proteins and lipids (0.7 - 0.8 ml / g) (see McIlwain H BH, 1985)
cData are expressed as mean ± SEM
dNumber of animals (i.e. the number of hippocampi)
Table 2: Mass spectrometric analysis of the concentration of androgens (T and DHT) or Allopregnanolone (Kerr JE et al.) in the hippocampus and plasma of adult female rats.