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Urea
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===Meaning===
[[Urea]] is a [[mixture]] of [[Nitrogen]] [[compound]]s formed when the body breaks down unwanted [[protein]]s.
===About Urea===
: [[Urea]] is made in the [[liver]]. The [[liver]] breaks down [[protein]]s first [[product|producing]] [[ammonia]] which is then quickly turned into [[urea]].
: [[Urea]] passes through the [[blood]] and is removed by the [[kidney]]s. This forms [[urine]] which is then stored in the [[bladder]].