The Crystalline Ovarian Follicular Hormone

@article{Maccorquodale1935TheCO,
  title={The Crystalline Ovarian Follicular Hormone},
  author={Donald W Maccorquodale and Sidney A. Thayer and Edward Adelbert Doisy},
  journal={Proceedings of the Society for Experimental Biology and Medicine},
  year={1935},
  volume={32},
  pages={1182 - 1182}
}
Due to the low concentration of estrus-producing material in ovaries, we abandoned their use several years ago in favor of the much cheaper and more concentrated source, namely, the urine of pregnant women and mares. However, with the isolation of so many different estrogenic compounds, it seemed desirable to determine the nature of the active substance in the ovary. Starting last year seriously to work on this problem we soon obtained the hormone in a crystalline condition but owing to the… 

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