Tolerance of mice to nitrous oxide.

Abstract

Mice continuously exposed to a subanesthetic dose of nitrous oxide (N2O) become tolerant to nitrous oxide, as measured by an increase in their ED50 (dose required to abolish the righting reflex in 50% of animals) for N2O. The maximum increase in ED50 is approximately 0.25 atm for mice exposed to 40, 50 or 70% N2O for 2 to 3 weeks. Mice exposed to 25% N2O… (More)

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