the mean ratio of the concentration of oestrone sulphate to that of oestrone in plasma from postmenopausal women ( 7.9 +/- 3.3 ) was significantly lower ( p less than 0.001 , t test ) than the mean ratio in men ( 19.8 +/- 3.8 ) .
C0059668
oestrone
C0014942
oestrone