gas chromatography mass spectrometry ( gc/ms ) with selected ion monitoring ( sim ) is employed to detect and approximate the levels of ( 13c ) progesterone is small blood samples obtained at intervals from ipsilateral and contralateral ovarian arteries and a peripheral vein before , during and after infusion into the utero-ovarian vein ( five women during hysterectomy ) .
C0042149
utero
C0020699
hysterectomy