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The specific androgen, estrogen and progestin binding was studied in normal human endometrium during various phases of the menstrual cycle. The simultaneous presence of these three hormone receptors was a common finding. Androgen receptor concentrations did not show cyclic variations. A copper intrauterine device had no effect on the endometrial androgen, estrogen and progestin receptor concentrations.
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Punnonen et al. (2010) studied this question.
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