[Study on the relationship between estrogen receptor beta and etiology of human endometrial polyps].

Objective: To investigate the relationships between the expression of estrogen receptor beta (ERbeta) and etiology of human endometrial polyps (EP).

Methods: Thirty-six females with infertility and 36 females with intrauterine contraceptive device (IUD, aged from 23 years to 33 years, average 28 years) were enrolled in the study. Blood samples were taken before hysteroscopy for analysis of the level of estradiol in serum.