A protein fragment created during the breakdown of fibrin (the protein that forms blood clots), representing an intermediate stage in protein digestion.
From deutero- (second) + fibrinose, combining fibrin with '-ose'. This word emerged from early biochemistry's systematic but ultimately incomplete naming of protein fragments.
Blood clotting is one of your body's most dramatic molecular events—proteins snap together to plug wounds—and when your body dissolves those clots, it creates these intermediate fragments.
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