Fluorescent IN SITU Hybridization is a relatively new technology utilizing fluorescently labeled DNA probes to detect or confirm gene or chromosome abnormalities that are generally beyond the resolution of routine cytogenetics. FISH is used in interphase cells to determine the chromosome number of one or more chromosomes as well as to detect some specific chromosome rearrangements that are characteristic for certain cancers. Fluorescent in situ hybridization is a complex test that detects mutations in chromosomes for a number of different types of cancer.

Fluorescent microscope works on the principle that an object is emitting light. It is designed to collect an optimal signal while minimizing background illumination. Two types of illumination exist for fluorescence microscopy: transmitted illumination and incident illumination. Most fluorescent microscopes use epifluorescence, meaning that the excitatory light is transmitted through the objectives onto the specimen and not through the specimen.

Fluoroscopy systems consist of a X-ray tube which produces X-rays, an image intensifier (I-I) that captures or stops the X-rays and converts the X-ray energy into light and a closed-circuit video system which ultimately produces a live image on a monitor. On some systems the light output can also be distributed to a spot film or cinematography recording systems, though the X-ray output must be greater for these imaging modalities.

Fluticasone nasal spray is used to treat the symptoms of seasonal, and perennial allergic rhinitis and perennial nonallergic rhinitis. These symptoms include sneezing and stuffy, runny, or itchy nose. It works by preventing and decreasing inflammation in the nose. It comes as a liquid to spray in the nose.