a brown pigment in faeces and sometimes urine
Crossword Clue

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AnswerCrossword Clue
urobilina brown pigment in faeces and sometimes urine
urobilinsUROBILIN, a brown pigment in faeces and sometimes urine
porphyriaA rare hereditary disease in which the blood pigment hemoglobin is abnormally metabolized. Porphyrins are excreted in the urine, which becomes dark; other symptoms include mental disturbances and extreme sensitivity of the skin to light
sepiasA brown pigment prepared from a black fluid secreted by cuttlefish, used in monochrome drawing and in watercolors
anatasesOne of the tetragonal forms of titanium dioxide, usually found as brown crystals, used as a pigment in paints and inks
methemoglobina soluble brown crystalline basic blood pigment that differs from hemoglobin in containing ferric iron and in being unable to combine reversibly with molecular oxygen
methemoglobinsMETHEMOGLOBIN, a soluble brown crystalline basic blood pigment that differs from hemoglobin in containing ferric iron and in being unable to combine reversibly with molecular oxygen