Assertion: estrone's activity | /r/HasProperty | calibrated against 17beta-oestradiol e2
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Source sentences:
text: Total oestrogenic activity in concentrates of the extracts was analysed using the Yeast Estrogen Screen (YES) calibrated against 17beta-oestradiol (E2), while oestrone (E1), E2 and 17alpha-ethinylestradiol