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Abbreviation for phosphotungstic acid hematoxylin.


1. A discoloration.
2. A pigment or dye used in coloring microscopic objects and tissues.
3. To apply pigment or dye to a tissue or microscopic object or tissue.

acid stain

A chemical used to stain the cytoplasmic or basic components of cells.

acid-fast stain

A stain used in bacteriology, esp. for staining Mycobacterium tuberculosis, Nocardia, and other species. A special solution of carbolfuchsin is used, which the organism retains in spite of washing with the decolorizing agent acid alcohol.
See: Ziehl-Neelsen method

basic stain

A chemical used to add pigment to the nuclear or acidic components of cells.

calcofluor white stain

A fluorescent stain used in microbiology to highlight fungi, including species of Pneumocystis.

Commission-Certified stain

A stain that has been certified by the Biological Stain Commission.

contrast stain

A stain used to color one part of a tissue or cell, unaffected when another part is stained by another color.

counter stain

See: counterstain

dental stain

A discoloration accumulating on the surface of teeth, dentures, or denture base material, most often attributed to the use of tea, coffee, or tobacco. Many stains contain calcium, carbon, copper, iron, nitrogen, oxygen, and sulfur. Stains may be intrinsic or extrinsic. Extrinsic stains of teeth can be removed, e.g, , by brushing, rinsing, or sonication. Intrinsic stains cannot be removed by these methods.

differential stain

In bacteriology, a stain such as Gram stain that enables one to distinguish different types of bacteria.

double stain

A mixture of two contrasting dyes, usually an acid and a basic stain.

Feulgen stain

See: Feulgen stain

Giemsa stain

See: Giemsa stain

Gram stain

See: Gram stain

hematoxylin-eosin stain

A widely used method of staining tissues for microscopic examination. It stains nuclei blue-black and cytoplasm pink.

intravital stain

A nontoxic dye that, when introduced into an organism, selectively stains certain cells or tissues. Synonym: vital stain

inversion stain

A basic stain that, when under the influence of a mordant, acts as an acid stain.

Jenner stain

See: Jenner stain

Leishman stain

See: Leishman, William Boog

metachromatic stain

A stain which causes cells or tissues to take on a color different from the stain itself.

Movat pentachrome stain

See: Movat pentachrome stain

neutral stain

A combination of an acid and a basic stain.

nonspecific stain

A dye added to a tissue specimen that binds to tissue indiscriminately, making it more difficult to distinguish one part from the next.

nuclear stain

A basic stain that colors cell nuclei, but does not stain structures in the cytoplasm.

Perls stain

See: Perls stain

phosphotungstic acid-hematoxylin stain

Abbreviation: PTAH
A histological stain that binds to proteins, used primarily to stain skeletal muscles and mitochondria. It is also used to identify glial cells in the central nervous system and fibrin.

port-wine stain

Nevus flammeus. See: nevus flammeus for illus.

special stain

A stain that highlights features of a cell or organism that cannot be readily identified with routine histological or microbiological staining techniques.

substantive stain

A stain that is directly absorbed by the tissues when they are immersed in the staining solution.

supravital stain

Stain that will color living cells or tissues that have been removed from the body.

tumor stain

In arteriography, an abnormally dense area in a radiographical image caused by the collection of contrast medium in the vessels. This may be a sign of neoplastic growth.

vital stain

Intravital stain.

Wright stain

See: Wright stain

phosphotungstic acid-hematoxylin stain

Abbreviation: PTAH
A histological stain that binds to proteins, used primarily to stain skeletal muscles and mitochondria. It is also used to identify glial cells in the central nervous system and fibrin.
See also: stain
References in periodicals archive ?
La Inmaculada tiene sobre su cabeza la paloma del Espiritu Santo y a los lados, unos angeles que tanen diversos instrumentos musicales salvo uno que sostiene una tarja con esta inscripcion: "Aedificata est cum propugnaculis" (La torre es inexpugnable).
During my two years in Laos the number of Americans grew from five to more than a hundred, but Ted Tanen and I were the pioneers in Public Diplomacy.
Newton, who plays bitchy receptionist Amanda Tanen, said her favourite celeb so far was Victoria Beckham.
The TV3 host - who has two daughters-was celebrating her win in a Tanen Michael floor length purple dress.
Studio exec and producer Ned Tanen, who served as president of Universal and Paramount, died Jan.
En cuanto a las capacidades de los indigenas, subraya la destreza con que tanen instrumentos musicales y el talento que muestran para aprender varios oficios mecanicos, como son los de sastre, carpintero, herrero, cantero y albanil: "Y conozco varios opatas y eudebes--presume--que los saben todos juntos y otros mas, hasta nueve" (75).
Luego, el claustro y las fotos tristes que parece que tanen responso por fallecidos.
Aun entre los habitantes--pertenecientes a culturas muy poco evolucionadas--de las tierras surcadas por los afluentes del Amazonas los cronistas espanoles que llegan hasta ellas tienen oportunidad de ver a los nativos portando los "organos que tanen la boca".
According to Don Tanen, a principal of KT Associates, "We want to participate in the revitalization of downtown Port Jervis and better integrate the shopping center into the fabric of with better pedestrian and automobile circulation.
2]) in predicting pneumonia, Tanen (11) studied 803 pediatric emergency patients suspected of having pneumonia.
Digalo si no la presencia en un recinto, en un espacio sagrado (el templo), de las insoportables estudiantinas y de los escandalosos mariachis, para no hablar de los "espontaneos" que a la menor provocacion tanen tina guitarra para cantar (es un decir) un alegre y movido Alleluia, un sentido Offertorium, un pudoroso Introitus o un bullanguero Sanctus, las cuatro "piezas" con bonitas melodias de su propia inspiracion.
nada me ha quedado Mas cae mi lengua: tenue por mis miembros flama se filtra; los oidos tanen con ruido suyo, cubreme con doble noche mis lumbres.