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Definition: The term "coistril" is not commonly used in English or any other language, and it may be a misspelling of some other word. If you are referring to something else, please provide more context so I can better assist you.
Definition: Coitrils are a type of protein that is found in the human gut. They play an important role in regulating digestion and nutrient absorption, as well as supporting certain immune functions. Coitril levels can be affected by factors such as diet, exercise, stress, and certain medications. Additionally, coitril deficiency has been associated with certain diseases, including Crohn's disease and psoriasis.