fluorescein
- n a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed)
- The fluorescein cannot give off its telltale glow until the phosphate has been removed, and nothing can remove phosphate better than the enzyme phosphatase, which is common to .
- He proved this by dumping 60 kilograms of a powerful green dye called fluorescein into the Trou du Toro.
- When the doctors have a patient with a gangrenous foot or strangulated hernia (protruding loop of gut), they wheel him into an operating room, inject fluorescein, a reddish dye .