@article{torii_ohsawa_1988, 
  title={Urinary Total Polyamines Levels in Estrous Cycle and during Pregnancy in Female Rats}, 
  volume={37}, 
  DOI={10.1538/expanim1978.37.4_473}, 
  publisher={Japanese Association for Laboratory Animal Science}, 
  author={TORII and OHSAWA}, 
  year={1988}
  }