Abstract
THE term œstrogen or œstrin is now used to designate the whole group of œstrus-inducing substances irrespective of its constitution or origin.
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References
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HASSAN, A., EL WAFA, M. An Œstrogenic Substance in Pollen-grains of Date Palm Tree Phœnix dactylifera L., Palmæ. Nature 159, 409–410 (1947). https://doi.org/10.1038/159409b0
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DOI: https://doi.org/10.1038/159409b0
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