The isolation of oestrone from the urine of cows in late pregnancy.
D000818:Animals; D002417:Cattle; D004967:Estrogens / Q000652:urine*; D004970:Estrone; D005260:Female; D011247:Pregnancy / Q000652:urine
D004967:Estrogens; D004970:Estrone
ESTROGENS/in urine; PREGNANCY/urine in
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