the influence of this anaesthetic on the urinary excretion of n-nitrosodimethylamine after gavage and inhalation was tested : in comparison with unanaesthetized animals and with a group under ether narcosis , the excretion of the nitrosamine by the thalamonal-anaesthetized animals was drastically reduced ( factor of 20 to 60 ) .
C0012431
nitrosodimethylamine
C0028197
nitrosamine