to provide some insight into how deoxyribonucleic acid ( dna ) synthesis occurs in the endometrium of the human uterus during the menstrual cycle , the dna polymerase activities ( alpha and beta ) in endometrial samples taken from normal cycling women , and the concentration of estradiol-17 beta ( e2 ) and progesterone in the serum were measured .
C0042149
uterus
C0025329
menstrual cycle