| challenge diet | A diet in which one or more specific substances are included for the purpose of determining whether an abnormal reaction occurs. (05 Mar 2000) |
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| inhalational injury | A term used to describe damage the respiratory tract and lungs secondary to the inhalation of a toxin. Some inhalation toxin may cause direct damage (irritants and chemicals) or indirectly through their systemic effects (carbon monoxide). (27 Sep 1997) |