Complex sentence: Studies on ozone exposure in animal models with IL-1 α and IL-1 β are mixed depending on the route of administration, with some showing reduction of inflammatory mediators when given intraarticularly or intramuscularly.
Split into simpler sentences: Studies on ozone exposure in animal models with IL-1 α and IL-1 β are mixed depending on the route of administration. There is a reduction of inflammatory mediators when given intraarticularly or intramuscularly.