Interactions of helium, oxygen, and nitrous oxide affecting bacterial growth.

@article{Marquis1978InteractionsOH,
  title={Interactions of helium, oxygen, and nitrous oxide affecting bacterial growth.},
  author={Robert E. Marquis and Stephen R. Thom and C A Crookshank},
  journal={Undersea biomedical research},
  year={1978},
  volume={5 2},
  pages={
          189-98
        }
}
Helium at pressures of 20 to 70 atm in the presence of air found to stimulate growth of Streptococcus faecalis, Escherichia coli, and Staphylococcus aureus, mainly by increasing the rate of exponential growth. However, at these same pressures, helium potentiated the growth-inhibitory actions of oxygen and nitrous oxide (N2O). Oxygen was found to act essentially as an anesthetic gas in inhibiting growth of S. faecalis; its potency was approximately the same as that of N2O, and it acted… CONTINUE READING