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This is an example of an Exposure EX dataset for selected animals from a nonclinical inhalation study in rats. Subjects were randomized to one 1 of three treatment 4 dose groups with the test article at dose levels of 0.7, 2.1, and 7.1 mg/kg/day and one 1 control group receiving vehicle. The study included 13 weeks of treatmentdosing. However, due to severe clinical signs, the dose level for group 4 animals was reduced from 7.1 to 5 during Week week 6. The other groups remained on the same treatment dose level throughout the study. The animals were placed in inhalation chambers each day for 60 minutes over the 13 weeks period. Prior to first dose and during the study exposure levels are were measured by placing a filter for a given time or a set amount of air passing in a port hole in the inhalation chamber. However, the EXDOSE  in this inhalation study contain the planned dose level.