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FISH
FISH Abbreviation for fluorescence in situ hybridization, a molecular technique used in chromosome studies. FISH employs fluorescent (fluorescein tags) that glow under ultraviolet light to detect the hybridization (the combination) of molecular probes with specific chromosomes and specific chromosome regions. In FISH, the process vividly paints chromosomes or portions of chromosomes with fluorescent molecules.
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Hybridization
The mixing of two varieties, races, species, types or sub-types by cross breeding.
Molecular
Refers to the basic building blocks of the genetic material, such as DNA, genes and the other chemicals involved with the functioning of genes.
Chromosome
A structural unit within a eukaryotic nucleus that carries genes. A chromosome consists of a long, continuous strand of DNA and associated proteins.
FISH
Abbreviation for fluorescence in situ hybridization, a molecular technique used in chromosome studies. FISH employs fluorescent (fluorescein tags) that glow under ultraviolet light to detect the hybridization (the combination) of molecular probes with specific chromosomes and specific chromosome regions. In FISH, the process vividly paints chromosomes or portions of chromosomes with fluorescent molecules.
Chromosomes
Filaments of genetic material in every cell nucleus that are made up of genes and that transmit genetic information from one generation of cells to the next.
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Fire gilding
A perilous process for gold-plating in which an amalgam of mercury and gold is applied to an object and then exposed to heat to vaporize the mercury and leave the gold behind in a thin layer. Fire gilding also is applicable to plating silver, copper, and copper alloys. The process of fie gilding is still used when antique work is to be repaired or an exact replica made. Fire gilding is hazardous because mercury vapors are emitted even at room temperature, presenting an appreciable risk of mercury poisoning. Fire gilding is also called mercury gilding.
Fireworks injury
An injury from a device for producing a striking display by the combustion of explosive or flammable compositions.
First cranial nerve
The olfactory nerve, the nerve that permits the sense of smell.
First degree burn
A superficial burn with similar characteristics to a typical sun burn. The skin is red in color and sensation is intact. In fact, it is usually somewhat painful.
First stage of labor
The part of labor when the cervix dilates fully (to 10 centimeters). The first stage of labor is also called the stage of dilatation.
FISH
Fish bowl granuloma
Localized nodular skin inflammation (small reddish raised areas of skin) caused by a bacterium called mycobacterium marinum. Fish bowl granuloma is typically acquired by occupational or recreational exposure to salt or fresh water, often resulting from minor trauma during caring for aquariums. The diagnosis is suggested by the history of exposure and confirmed by culturing tissue specimens which yield the microscopic organism, mycobacterium marinum. The infection can be treated with a variety of antibiotics, including doxycycline, minocycline, clarithromycin, rifampin, and trimethoprim-sulfamethoxazole. Also called "swimming pool granuloma."
Fish oil, omega-3
A class of fatty acids found in fish oils, especially from salmon and other cold-water fish, that acts to lower the levels of cholesterol and LDL (low-density lipoproteins) in the blood. (LDL cholesterol is the "bad" cholesterol.) Omega-3 fish oil is therefore thought to be a neutraceutical, a food that provides health benefits. Eating fish has been reported to protect against late age-related macular degeneration, a common eye disease. The maximum benefit appears to be from eating fish once a week.
Fish-odor syndrome
An inborn error of metabolism associated with an offensive body odor, the smell of rotting fish, due to the excessive excretion of trimethylaminuria (TMA) in urine, sweat, and breath. Persons with TMA may experience tachycardia (fast heart rate) and severe hypertension (high blood pressure) after eating cheese (which contains tyramine) and after using nasal sprays containing epinephrine. TMA is caused by a mutation (change) in the gene for an enzyme, flavin-containing monooxygenase-3 (FMO3) encoded by a gene on chromosome #1. The FMO3 enzyme metabolizes tyramine (which is in cheese). The syndrome is associated with various psychosocial reactions, including social isolation, clinical depression and attempted suicide.
Fissure, palpebral
The opening for the eye between the eyelids.
Fistula, anal
An opening in the skin near the anus that leads into a blind pouch or may connect through a tunnel with the rectal canal.
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