a significant reduction of the ratios of the steroidal pairs 17 alpha-hydroxyprogesterone-progesterone ( 17 alpha-hydroxylase ) and androstenedione-17 alpha-hydroxyprogesterone ( 17,20-desmolase ) was observed after human chorionic gonadotropin injection ( p less than 0.001 ) .
C0020387
alpha-hydroxyprogesterone
C0045010
17 alpha-hydroxyprogesterone