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I am system X. I perform secretions inside the body and have ducts. The secretions act at the site of secretion. I have a counter system,i.e., Y and it has exactly the opposite set of properties. Identify me and my counter system.

Answer» I am system X. I perform secretions inside the body and have ducts. The secretions act at the site of secretion. I have a counter system,i.e., Y and it has exactly the opposite set of properties. Identify me and my counter system.


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