A yellowish red, crystalline substance, C20H12O5, produced by heating together phthalic anhydride and resorcin; -- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin.
An organic chemical, which fluoresces green in water, detectable even when present in minute quantities. Used in tracing underground water flow.
Dye that fluoresces green when exposed to blue or ultraviolet light.
Fluorescent dye that fluoresces green when illuminated with blue light or ultraviolet light.
A fluorescent substance adsorbed to antibodies in order to facilitate their detection and location on a tissue.
A fluorane dye used for, among other things, identifying ulcers on the cornea.
FLOR-eh-seen] angiogram (FA) - a procedure for viewing and photographing the inner eye nvolving injection of a non-toxic dye into the bloodstream.
A compound used as a diagnostic aid to show injuries of the cornea or retina of the eye.
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)
A dye used to stain the eye to evaluate tear film and dry spots.
a harmless yellow coloured dye that is used to outline the vessels of the eye
Compound that becomes a bright, fluorescent yellow-green when in contact with alkaline substances. A fluorescein dye solution can help eye doctors see corneal lesions or conduct tests for eye dryness.
A fluorescent molecule commonly used as a reporter dye. Fluorescein is excited by a light having a wavelength of 488 nm and after which emits light at 522 nm under commonly used aqueous conditions.
An orange-red water-soluble compound, C20H12O5 whose solutions in alkalis produce an orange colour and a green fluorescence. It is used an indicator and in dyes.
A very common fluorescent molecule that excites and emits in the blue-green color range.
An orange-red compound that exhibits intense fluorescence in alkaline solutions and is used to dye water in order to trace its course and movement.
A molecule that emits light at certain wavelengths; often used to tag antibodies or other proteins and nucleic acids.
Fluorescein is a fluorophore commonly used in microscopy, in a type of dye laser as the gain medium, in forensics and serology to detect latent blood stains, and in dye tracing. Fluorescein has an absorption maximum at 490 nm and emission maximum of 514 nm (in water). Also, fluorescein has an isoabsorptive point (equal absorption for all pH values) at 460 nm.