Sleep: effects on incorporation of inorganic phosphate into brain fractions.

@article{Reich1967SleepEO,
  title={Sleep: effects on incorporation of inorganic phosphate into brain fractions.},
  author={Peter Reich and J K Driver and Manfred L. Karnovsky},
  journal={Science},
  year={1967},
  volume={157 3786},
  pages={336-8}
}
During sleep there is a two- to threefold increase in the incorporation of inorganic orthophosphate-(32)P into a chemical fraction of the brain of the 20-day-old rat. This increase is not in the lipids or nucleic acids, but is associated with an acid-labile phosphate entity of the tissue residue after extraction of these fractions and phosphorus-containing substances of low molecular weight.