Rats on 22.5‐Hr Light:Dark Cycles Have Vaginal Opening Earlier Than Rats on 26‐Hr Light:Dark Cycles

@article{Lehrer1986RatsO2,
  title={Rats on 22.5‐Hr Light:Dark Cycles Have Vaginal Opening Earlier Than Rats on 26‐Hr Light:Dark Cycles},
  author={S. Lehrer},
  journal={Journal of Pineal Research},
  year={1986},
  volume={3}
}
  • S. Lehrer
  • Published 1986
  • Biology, Medicine
  • Journal of Pineal Research
Rats on 22.5‐hr light:dark cycles had vaginal opening significantly earlier than rats on 26‐hr light:dark cycles. This finding might explain the early menarche in blind girls: Their circadian rhythms, like those of rats on 22.5‐hr cycles, might be more rapid than normal. Thus a set number of cycles can occur in a shorter time than usual, allowing puberty to take place early. 

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