lol. What's not coming across is that I didn't immediately realize that my manager was not asking me whether I worked with the theoretical person Billy Rubin.
In the liver it is conjugated to glucuronic acid, making it soluble in water. Much of it goes into the bile and thus out into the small intestine. Some of the conjugated bilirubin remains in the large intestine and is metabolised by colonic bacteria to urobilinogen, which is further metabolized to stercobilinogen, and finally oxidised to stercobilin. This stercobilin gives feces its brown color. Some of the urobilinogen is reabsorbed and excreted in the urine along with an oxidized form, urobilin.
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