A rare bile pigment or breakdown product related to the bilins; a chemical compound found in bile metabolism.
From Latin 'bilis' (bile) + possibly 'niger' (black) or a similar root, combined with the '-in' chemical suffix to create a technical biochemical term.
Bilinigrin is so obscure that most medical dictionaries barely mention it—it's a reminder that biochemistry is incredibly complex, with thousands of molecules scientists are still discovering!
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