Phosphotungstic acid haematoxylin
- Phosphotungstic acid haematoxylin
Phosphotungstic acid haematoxylin (PTAH) is a mix of haematoxylin with phosphotungstic acid, used in histology for staining. It stains some tissue in contrasting colors in a way similar to haematoxylin and eosin stain, as phosphotungstic acid binds to tissue proteins. It is used to show gliosis in the central nervous system, tumours of skeletal muscles, and fibrin deposits in lesions. Muscle is stained blue-black to dark brown, connective tissue is pale orange-pink to brownish red, fibrin and neuroglia stain deep blue, coarse elastic fibers show as purple, and bone and cartilage obtain yellowish to brownish red color. PTAH is ideal for demonstrating striated muscle fibers and mitochondria, often without a counterstain.
PTAH stains ependymomas while it does not stain choroid plexus papillomas, providing one means of differentiating these tumors.
Wikimedia Foundation.
2010.
Look at other dictionaries:
Phosphotungstic acid — Chembox new Name = Phosphotungstic acid ImageFile = Phosphotungstate 3D polyhedra.png ImageName = Structure of the phosphotungstate anion OtherNames = PTA, TPA, tungstophosphoric acid Section1 = Chembox Identifiers CASNo = 12067 99 1 Section2 =… … Wikipedia
Haematoxylin — IUPAC name 7,11b dihydroindeno[2,1 c]chromene 3,4,6a,9,10(6H) pentol … Wikipedia
Hematoxilina ácida fosfotúngstica — El método de la hematoxilina ácida fosfotúngstica de Mallory o PTAH (siglas inglesas de Mallory s phosphotungstic acid haematoxylin), es una técnica histológica para la demostración, principalmente, de la presencia de fibrina, de estriaciones… … Wikipedia Español
PTAH — biomed. abbr. Phosphotungstic Acid Haematoxylin … United dictionary of abbreviations and acronyms
Staining — is an auxiliary technique used in microscopy to enhance contrast in the microscopic image.In biochemistry it involves adding a class specific (DNA, proteins, lipids, carbohydrates) dye to a substrate to qualify or quantify the presence of a… … Wikipedia
Papanicolaou stain — showing a low grade squamous intraepithelial lesion (LSIL). Pap test. Papanicolaou stain (also Papanicolaou s stain and Pap stain) is a multichromatic staining histological technique developed by George Papanikolaou, the father of cytopathology.… … Wikipedia
Papanicolaou's stain — A complex stain for detecting malignant cells in cervical smears. Contains in separate staining stages (a) haematoxylin, (b) Orange G phosphotungstic acid c) Light green, Bismarck Brown, Eosin and phosphotungstic acid … Dictionary of molecular biology
