Reproductive biology: Progesterone's gateway into sperm

@article{Publicover2011ReproductiveBP,
  title={Reproductive biology: Progesterone's gateway into sperm},
  author={Stephen Publicover and Christopher L R Barratt},
  journal={Nature},
  year={2011},
  volume={471},
  pages={313-314}
}
The hormone progesterone rapidly activates intracellular signalling in human sperm, regulating key aspects of their physiology. An ion channel unique to the sperm tail seems to relay progesterone's signal. See Letters p.382 & p.387 See Clarification  p.598 The female steroid hormone progesterone is produced by the ovaries and the placenta, and supports gestation and embryogenesis through its actions on a well-characterized nuclear progesterone receptor. But progesterone released by cells… 
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