Sources main content.


Scientific Paper

  • Bailey, M.J., et al. "Night/Day Changes in Pineal Expression of >600 Genes." Journal of Biological Chemistry (December 22, 2008).


  • Brain model, clock (AMNH)
  • Illustration (From RenĂ© Descartes' De Homine, 1662

This Human Bulletin was made possible by Science Education Partnership Award (SEPA) grant #1 R25 RR025057-01 from the National Center for Research Resources (NCRR), a component of the National Institutes of Health (NIH).