stain


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stain

 [stān]
1. a substance used to impart color to tissues or cells, to facilitate microscopic study and identification.
2. an area of discoloration of the skin.
acid-fast stain a staining procedure for demonstrating acid-fast microorganisms.
differential stain one that facilitates differentiation of various elements in a specimen.
endogenous stain an intrinsic stain acquired during tooth development.
exogenous stain an intrinsic stain acquired after a tooth has erupted.
extrinsic stain a stain that can be removed from a tooth surface by polishing.
Giemsa stain a solution containing azure II-eosin, azure II-glycerin, and methanol; used for staining protozoan parasites such as Plasmodium and Trypanosoma, for Chlamydia, for differential staining of blood smears, and for viral inclusion bodies. Stained elements appear pink to purple to blue.
Gram stain a staining procedure in which bacteria are stained with crystal violet, treated with strong iodine solution, decolorized with ethanol or ethanol-acetone, and counterstained with a contrasting dye; those retaining the stain are called gram-positive, and those losing the stain but staining with the counterstain are called gram-negative.
hematoxylin and eosin stain a mixture of hematoxylin in distilled water and aqueous eosin solution, employed universally for routine examination of tissues.
intrinsic stain a stain that is within the enamel of a tooth and cannot be removed by polishing.
metachromatic stain one that produces in certain elements a color different from that of the stain itself.
nuclear stain one that selectively stains cell nuclei, generally a basic stain.
port-wine stain a persistent dark red to purple nevus flammeus that grows proportionately with the affected child and is usually found on the face. Initially it is macular, but the surface may develop angiomatous overgrowths with time. Port-wine stains often occur in association with other congenital abnormalities.
supravital stain a stain introduced in living tissue or cells that have been removed from the body.
tumor stain an area of increased density in a radiograph, due to collection of contrast material in distorted and abnormal vessels, prominent in the capillary and venous phases of arteriography, and presumed to indicate neoplasm.
vital stain a stain introduced into the living organism, and taken up selectively by various tissue or cellular elements.
Wright's stain a mixture of eosin and methylene blue, used for demonstrating blood cells and malarial parasites.

stain

(stān),
1. To discolor.
2. To color; to dye.
3. A discoloration.
4. A dye used in histologic and bacteriologic techniques
5. A procedure in which a dye or combination of dyes and reagents is used to color the constituents of cells and tissues. For individual dyes or staining substances, see the specific names.
[M.E. steinen]

stain

(stān)
1. a substance used to impart color to tissues or cells, to facilitate microscopic study and identification.
2. an area of discoloration of the skin.

differential stain  one which facilitates differentiation of various elements in a specimen.
Giemsa stain  a solution containing azure II-eosin, azure II, glycerin, and methanol; used for staining protozoan parasites, such as Plasmodium and Trypanosoma, for Chlamydia, for differential staining of blood smears, and for viral inclusion bodies.
Gram stain  a staining procedure in which microorganisms are stained with crystal violet, treated with strong iodine solution, decolorized with ethanol or ethanol-acetone, and counterstained with a contrasting dye; those retaining the stain are gram-positive, and those losing the stain but staining with the counterstain are gram-negative.
hematoxylin-eosin stain  a mixture of hematoxylin in distilled water and aqueous eosin solution, employed universally for routine tissue examination.
metachromatic stain  one which produces in certain elements colors different from that of the stain itself.
port-wine stain  see nevus flammeus.
supravital stain  a stain introduced in living tissue that has been removed from the body, but before cessation of the chemical life of the cells.
tumor stain  an area of increased density in a radiograph, due to collection of contrast material in distorted and abnormal vessels, prominent in the capillary and venous phase of arteriography, and presumed to indicate neoplasm.
vital stain  a stain introduced into the living organism, and taken up selectively by various tissues or cellular elements.
Wright's stain  a mixture of eosin and methylene blue, used for demonstrating blood cells and malarial parasites.

stain

(stān)
v. stained, staining, stains
v.tr.
To treat (a specimen for the microscope) with a reagent or dye in order to identify cell or tissue structures or microorganisms.
n.
A reagent or dye used for staining microscopic specimens.

stain′a·ble adj.
stain′er n.

stain

Etymology: OFr, desteindre, to dye
1 n, a pigment, dye, or substance used to impart color to microscopic objects or tissues to facilitate their examination and identification. Kinds of stains include acid-fast stain, Gram's stain, and Wright's stain.
2 v, to apply pigment to a substance or tissue to examine it under a microscope.
3 n, an area of discoloration.

stain

(stān)
1. To discolor.
2. To color; to dye.
3. A discoloration.
4. A dye used in histologic and bacteriologic technique.
5. A procedure in which a dye or combination of dyes and reagents is used to color the constituents of cells and tissues.
[M.E. steinen]

stain

(stān)
1. To discolor.
2. To color; to dye.
3. A discoloration.
4. A dye used in histologic and bacteriologic techniques
5. A procedure in which a dye or combination of dyes and reagents is used to color constituents of cells and tissues.
[M.E. steinen]

stain

1. a substance used to impart color to tissues or cells, to facilitate microscopic study and identification.
2. an area of discoloration of the skin.

acid stain
a stain in which the coloring agent is in the acid radical.
basic stain
a stain in which the coloring agent is in the basic radical.
carbol fuschin stain
used to stain some gram-negative bacteria, including Campylobacter fetus.
Castaneda's stain
a technique for demonstrating chlamydial elementary bodies, using formol blue and safranine.
Diene's stain
one containing methylene blue, maltose and azure II, used for staining mycoplasmal microcolonies.
differential stain
one which facilitates differentiation of various elements in a specimen.
hematoxylin and eosin stain
a staining method employed universally for routine histological examination of tissue sections.
India ink stain
used to demonstrate capsules on Cryptococcus neoformans and some bacterial species.
lambing stain
staining of the breech and back of the udder of a ewe caused by the passage of the fetal fluids and then the lochia. Used as a guide to whether or not the ewe has lambed and perhaps lost her lamb.
Macchiavello stain
a basic fuscin solution for staining chlamydial elementary bodies.
metachromatic stain
one that produces in certain elements color different from that of the stain itself.
methanamine silver stain
stains fungal elements in tissue a dark brown.
new methylene blue stain
a metachromatic dye used for staining blood, vaginal smears, and tissue samples for cytological examination. Particularly useful in demonstrating reticulocytes.
Newman's stain
used on smears of milk for demonstrating organisms in mastitis.
nigrosin stain
an aniline dye used in wet mounts to demonstrate capsules, especially with cryptococcusneoformans.
nuclear stain
one that selectively stains cell nuclei, generally a basic stain.
ophthalmic stain
used in the diagnosis of diseases of the eye, e.g. fluorescein and rose bengal dyes.
supravital stain
a stain introduced in living tissue or cells that have been removed from the body.
tumor stain
an area of increased density in a radiograph, due to collection of contrast material in distorted and abnormal vessels, prominent in the capillary and venous phases of arteriography, and presumed to indicate neoplasm.
vital stain
a stain introduced into the living organism, and taken up selectively by various tissue or cellular elements. Often used to determine the live/dead cell ratio in a cell population.
Wright's stain
a mixture of eosin and methylene blue, used for demonstrating blood cells.
Ziehl-Neelsen stain
one of carbol fuchsin counterstained with methylene blue; used to demonstrate acid-fast organisms, especially Mycobacterium spp., in smears and tissues. A modified method using mild acid to decolorize is used for staining Brucella spp. and Nocardia asteroides. See also acid-fast.
References in periodicals archive ?
If the stain persists, take a small amount of powdered detergent and mix with one ounce of "non-sudsing" household ammonia to form a paste.
In conclusion, the buffalo sperm can be stained with higher concentration of AO stain (1000ug/mL) to detect DNA fragmentation effectively; after washing of egg yolk based extender either with normal or phosphate buffered saline and using heat during the incubation in tampon solution.
All the ultrasound-guided FNAC smears were stained with Pap stain, HE stain, and Leishman stain.
PPG Timeless stain provides decks, fences and more with enduring beauty through rich, vibrant and deep colors.
What we don't love is grease stain our favourite shirt
The H and E stain was performed on the slides to determine the histological diagnosis for selecting tissues and only the caseous or noncaseous granulomatous lymph nodes were selected.
With everything that you have to consider, treating the stain can become very tedious.
donovani parasite was respond to food colorings and stained well in comparison with giemsa stain as control stain depending for parasite staining.
Some folks have problems with water-based stains raising the wood grain but if you dampen the wood and raise the grain between sanding grits as you should, this problem can easily be avoided.
By Ziehl-Neelsen stain AFB stain pink curve/straight beaded rods against blue background by Auramine-Rhodamine stain AFB appears as bright reddish-yellow fluorescing rods against a dark background and by Papanicolaou stain fluorescent bacilli appeared as slender, often beaded, yellow-green, straight or slightly curved rods of relatively uniform length against a dark background.
Regardless of the type of stain, proper preparation of the concrete surface (cleaning and profiling) is crucial for obtaining a desired, long-lasting finish, according to John.
Anwar Maqsood added the fitting closing comment, "No matter our choice or preference, and as varied as they may be, we can all agree that Ariel provides the Best Stain Removal in 1-Wash*".