Ultimately, the kidneys will be able to excrete this via the urine. And when the homogeneousate will be found in the urine and exposed to air, it will begin to polymerize. And that polymer product will basically cause a color change of the urine. So the urine will turn black. And that's one clinical manifestation of individuals who have al captive nuria. Now, luckily, this condition is relatively benign, and most individuals with this condition don't actually get diagnosed until later on in their lives.