Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A–J) Simulation snapshots (fragments) of 10 representative steroids. (A) β-estradiol, (B) estriol, (C) testosterone, (D) 4-androstenedione, (E) progesterone, (F) pregnenolone, (G) pregnenolone sulfate, (H) pregnenolone acetate, (I) hydrocortisone, and (J) β-sitosterol. Polar lipid head groups are shown in ball and stick representation, lipid tails as gray lines, and steroids as cyan sticks (only polar hydrogen atoms are shown). Water molecules are omitted for clarity.
