Contains
- bilirubin
An orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts...
- melanin
Insoluble pigments that account for the color of e.g. skin and scales and feathers.
- urobilin
Brown bile pigment formed from urobilinogens and found in feces and in small amounts in...
- luciferin
Pigment occurring in luminescent organisms (as fireflies); emits heatless light when undergoing...