Isolation of a crystalline estrogen from urine and the follicular hormone from ovaries.
D000818:Animals; D001671:Biochemistry / Q000266:history*; D004967:Estrogens / Q000652:urine*; D004970:Estrone / Q000302:isolation & purification*; D005260:Female; D049673:History, 20th Century; D006801:Humans; D010053:Ovary / Q000032:analysis*; D011247:Pregnancy; D014481:United States
D004967:Estrogens; D004970:Estrone