to assess the capacity of the corpus luteum to secrete steroid hormones and relaxin during spontaneous abortion , human chorionic gonadotropin ( hcg ) , progesterone , 17 alpha-hydroxyprogesterone ( 17-ohp ) and relaxin concentrations were determined in serum samples obtained from 16 spontaneously aborting first-trimester patients and 5 asymptomatic , apparently normal women who subsequently aborted .
C0000786
spontaneous abortion
C0045010
17 alpha-hydroxyprogesterone