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A dark brown-red pigment that may be formed when bilirubin is reduced.
Farlex Partner Medical Dictionary © Farlex 2012
hydrobilirubin(hī″drō-bĭl″ĭ-roo′bĭn) [″ + L. bilis, bile, + ruber, red]
A brownish-red bile pigment, derived from bilirubin and thought to be identical to stercobilin and urobilin.
Medical Dictionary, © 2009 Farlex and Partners