FISH

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hybridization

 [hi″brid-ĭ-za´shun]
1. the production of hybrids.
fluorescent in situ hybridization (FISH) a genetic mapping technique using fluorescent tags for analysis of chromosomal aberrations and genetic abnormalities. Called also chromosome painting.
molecular hybridization in molecular biology, formation of a partially or wholly complementary nucleic acid duplex by association of single strands, usually between DNA and RNA strands or previously unassociated DNA strands, but also between RNA strands; used to detect and isolate specific sequences, measure homology, or define other characteristics of one or both strands.

FISH

(fish),

fish

ichthyophobia.

fish

(fĭsh)
n. pl. fish or fishes
1. Any of numerous cold-blooded aquatic vertebrates characteristically having fins, gills, and a streamlined body and including the bony fishes, such as catfishes and tunas, and the cartilaginous fishes, such as sharks and rays.
2. Any of various jawless aquatic craniates, including the lampreys and hagfishes.
3. The flesh of such animals used as food.
Cardiology Finnish Isradipine Study In Hypertension
Molecular medicine Fluorescent In Situ Hybridization. A method for locating a segment of DNA on a chromosome. The DNA is labeled with a fluorescent dye and hybridized to a cytological preparation of chromosomes that has been denatured to allow nucleic acid hybridization between chromosomal DNA and the probe. The site of hybridization is determined by fluorescent microscopy. FISH is a hybrid of 3 technologies: cytogenetics, fluorescence microscopy, and DNA hybridization, which is used to determine cell ploidy and detect chromosome segments by evaluating interphase—non-dividing—nuclei; in FISH, fluoresceinated chromosome probes are used for cytologic analysis and cytogenetic studies, and to detect intratumoral heterogeneity. In genetics, FISH provides a physical mapping approach to detect hybridization of probes with metaphase chromosomes and with the less-condensed somatic interphase chromatin
DNA probes may be applied to cell preparations on a slide; if the complementary DNA sequence is present, it binds to DNA and can be detected by light microscopy; FISH labels probes nonradioactively either directly with fluorochromes, or indirectly with biotin and fluorochrome-labeled avidin, with digoxeginin and fluorochrome-labeled anti-digoxeginin, or others; the use of multiple band-pass filters allows simultaneous viewing of numerous probes for different chromosomal sequences labeled with different fluorochromes; FISH is useful in cytogenetic studies, where probes for particular chromosomes—e.g., chromosomes 13, 18, 21—or chromosomal regions—e.g., ABL and BCR genes in the Philadelphia translocation—can be used for the prenatal diagnosis of common aneuploidies or to detect early stages of lymphoproliferative disorders; FISH is as sensitive as other analytical techniques—e.g., conventional cytology and flow cytometry, used to diagnose transitional cell carcinoma of the urinary bladder
Pros FISH is simpler, less labor-intensive, and time-consuming—48 hours—than classic cytogenetics—karyotyping—2-3 weeks
Cons Only one question can be asked at a time, i.e., rather than asking ‘global issues’—e.g., what is the genetic composition of a population of cells

FISH

Fluorescent in situ hybridization Molecular medicine A hybrid of 3 technologies: cytogenetics, fluorescence microscopy, and DNA hybridization, which is used to determine cell ploidy and detect chromosome segments by evaluating interphase–non-dividing nuclei; in FISH, fluoresceinated chromosome probes are used for cytologic analysis and cytogenetic studies, and to detect intratumoral heterogeneity. See Chromosomal paint box.

FISH

Abbreviation for fluorescence in situ hybridization.

FISH

Abbrev for fluorescence in situ hybridization. This is a technique for detecting and locating gene mutations and chromosome abnormalities.

fish

any of a large group of cold-blooded, finned aquatic vertebrates. fish are generally scaled, and respire by passing water over gills. fish were formerly placed in a single grouping, class Pisces. It is now recognised that there are four distinct classes, ACTINOPTERYGII, (ray-finned fishes), CHOANICHTHYES (fins with central skeletal axis - collectively sometimes classed as Osteichthyes, see BONY FISH) CHONDRYCHTHYES (sharks) and APHETOHYIDEAN (extinct, primitive, jawed fish).

FISH

acronym for FLUORESCENCE IN SITU HYBRIDIZATION.

FISH

(flourescence in-situ hybridization) Technique used to detect small deletions or rearrangements in chromosomes.
Mentioned in: Prader-Willi Syndrome

Patient discussion about FISH

Q. Does fish-oil helps exercise induced asthma? I was diagnosed with exercise induced asthma a couple of year ago, and since then had better and worse times with my asthma, although the treatment I get. I read in a newspaper that fish oil can help exercise induced asthma- is that true? Do I have to eat fish-oil specifically or can I eat fish instead (I really, really, hate fish-oil…)?

A. I take 6, 1000mg softgels/day. It helps my asthma, arthritis and has lowered my closterol. Started with 10 and worked down to 6, which seems to work best, though sometimes I need the extra.

Q. Can omega-3 make my cholesterol lower? My doctor told me that I have too much cholesterol in my blood, and that it can cause heart attack or stroke, but if I keep it low than my risk will be lower. He told me that because it’s not that high level I can try to change my diet before I have to start taking medication. I heard that omega-3 can make my cholesterol level low. Is that true? Do I have to take it in pills? Is it safe?

A. You can consume omega-3 either as pills or in fish oil, fatty fish (such as salmon) and vegetarian food such as flaxseed and flaxseed oil, canola oil, soybean oil, and nuts.

More discussions about FISH
References in periodicals archive ?
The ichthyofauna was mainly discriminated by Coelorhynchus marinii, Genypterus blacodes, Helicolenus dactylopterus lahillei, Macruronus magellanicus, Patagonotothen ramsayi, Squalus acanthias and S.
A common approach employed to study resource partitioning in ichthyofauna assemblages is diet overlap or niche overlap analysis (Winemiller and Pianka, 1990; Uieda et al., 1997; Esteves et al., 2008).
The composition of the ichthyofauna of the Santa Cruz reservoir followed the pattern of reservoirs in Brazil and other countries; it consists of a combination of species present in the dammed river and introduced species, of small and medium size (Fernando and Holcik, 1991; Agostinho et al., 2007).
In spite of the considerable impacts that have affected the study area since the construction of the local port by the Para Dock Company and the subsequent installation of mineral ore-processing industries, the ichthyofauna of the estuary of the Para River is characterized by a considerable diversity, with a total of 77 species being recorded within the study area.
The ichthyofauna of streams lives with considerable temporal and spatial variation in the food supply (POWER, 1983),and the availability of food depends on various factors such as streamflow, channel morphology, hydrological period, and physical and chemical attributes, as well as biotic interactions.
Geographical distribution of the San Juan ichthyofauna of Central America, with remarks in its origin and ecology, p.
Ichthyofauna of Bahia de San Quintin Baja California, Mexico, and its adjacent coast.
Analysing the geographical distribution of nine collected fish families, except for Poeciliidae and Cichlidae, Japi Mountain streams contribute to conserve the ichthyofauna restricted to the American continent, mainly Callichthyidae and Erythrinidae exclusive to South America (Table 3).
membranaceus constitutes an important part of the ichthyofauna of Jebba lake, its food composition, position in the food web of the lake, intensity of feeding and diel feeding activity is not yet ascertained.