1050 Results for: "SIGMA ALDRICH MICROSCOPY"

Supplier: SIGMA ALDRICH MICROSCOPY

Orcein, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Reagent for aluminium. Aurintricarboxylic acid readily polymerises in aqueous solution, forming a stable free radical that inhibits protein-nucleic acid interactions. It is a potent inhibitor of ribonuclease and topoisomerase II by preventing the binding of the nucleic acid to the enzyme. It stimulates tyrosine phosphorylation processes including the Jak2/STAT5 pathway in NB2 lymphoma cells, ErbB4 in neuroblastoma cells, and MAP kinases, Shc proteins, phosphatidylinositide 3-kinase and phospholipase C in PC12 cells. Aurintricarboxylic acid inhibits apoptosis in many cell types. Its neuroprotective effect, perhaps due to its ability to prevent down-regulation of Ca²⁺ impermeable GluR2 receptors or to its ability to inhibit calpain, a Ca²⁺-activated protease that is activated during apoptosis.

Supplier: SIGMA ALDRICH MICROSCOPY

Sodium 3,5-dichloro-2-hydroxybenzenesulfonate is used in conjunction with 4-aminoantipyrine (4-AAP) and hydrogen peroxide (H2O2) for chromogenic quantitation of uric acid in serum and urine samples.

Supplier: SIGMA ALDRICH MICROSCOPY

Regular Paraplast with approx. 0,8% DMSO added for enhanced ease of infiltration and sectioning. Paraffin polyisobutylene mixture is a tissue embedding medium composed of highly purified paraffin and polyisobutylene and a low level of dimethyl sulfoxide (DMSO) to enhance the rate of tissue penetration. Paraffin-polyisobutylene (76258) supports thin wrinkle-free sectioning down to 4 µm with more flexible and continuous ribbons.

Supplier: SIGMA ALDRICH MICROSCOPY

Rhodamine 19 perchlorate ~95% (dye content), Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Solution 2% in amyl acetate (Cellulose nitrate).

Supplier: SIGMA ALDRICH MICROSCOPY

D.P.X mounting medium is a mixture of distyrene (polystyrene), a plasticizer (tricresyl phosphate), and xylene. It facilitates the protection of stains and can dry quickly.

Supplier: SIGMA ALDRICH MICROSCOPY

Sudan black B, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Fluoromount™ Aqueous Mounting Medium for use with fluorescent dye-stained tissue.

Supplier: SIGMA ALDRICH MICROSCOPY

In Schaeffer-Fulton`s method, a primary stain-malachite green is forced into the spore by steaming the bacterial emulsion. Malachite green is water soluble and has a low affinity for cellular material, so vegetative cells may be decolorized with water. Ve

Supplier: SIGMA ALDRICH MICROSCOPY

Intended for use in the study of connective tissue, muscle and collagen fibers. Stains collagen blue and muscle red.

Supplier: SIGMA ALDRICH MICROSCOPY

Useful for staining fresh, fixed, unembedded or plastic-embedded sections of bone. Villanueva osteochrome bone stain gives uniform and reproducible results. Useful in studying biopsy or postmortem tissue.

Supplier: SIGMA ALDRICH MICROSCOPY

Used in electrophoresis and as a hapten carrier. Most commonly used to prepare density gradients. A nonionic synthetic polymer of sucrose.

Supplier: SIGMA ALDRICH MICROSCOPY

Used to demonstrate polymorphonuclear cells in blood or bone marrow films. Each kit has sufficient reagents for 10 uses.

Supplier: SIGMA ALDRICH MICROSCOPY

Tetrachlorophthalonitrile,98%

Supplier: SIGMA ALDRICH MICROSCOPY

Bouin's solution is an excellent fixative for preserving soft and delicate structures. It is prepared with saturated picric acid, formaldehyde and acetic acid.

Supplier: SIGMA ALDRICH MICROSCOPY

When blood films are stained using Wright-Giemsa Stain, the white blood cell nucleus and cytoplasm take on the characteristic blue or pink coloration. The combination of purified eosin and thiazine dyes in the product eliminates inconsistent staining and yields reproducible chromogenic responses.

Supplier: SIGMA ALDRICH MICROSCOPY

Brilliant Blue R has been used in staining of gels after electrophoresis. It has also been used to determine protein in the protein bodies. For detection of protein bands following electrophoresis.

Supplier: SIGMA ALDRICH MICROSCOPY

3,3'-Diaminobenzidine tetrahydrochloride hydrate is a chromogen commonly used in immunohistochemistry and other staining techniques to visualise the presence of antigens or antibodies in biological samples. DAB HCl is designed as an immunohistology stain to visualise peroxidase activity in cells. DAB oxidation can be measured using a spectrophotometer.

Supplier: SIGMA ALDRICH MICROSCOPY

Nuclear counterstain. Included as a component in the Sigma Fetal Hemoglobin Procedure 285.

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NLO material.

Supplier: SIGMA ALDRICH MICROSCOPY

Haematoxylin, Sigma-Aldrich®

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Naphthol AS-MX phosphate, Sigma-Aldrich®

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For use in inhibiting α-naphthyl acetate reaction on monocytes. Optional reagent in Sigma Esterase Procedure 91A.

Supplier: SIGMA ALDRICH MICROSCOPY

Sodium diatrizoate hydrate has been used in spore purification. It has also been used in the isolation of plasma lymphocytes, monocytes, and dendritic cells. Sodium diatrizoate is also suitable as a density gradient reagent in blood cell separation. It has also been utilised as a radiological contrast agent.

Supplier: SIGMA ALDRICH MICROSCOPY

For use with Sigma kit 86R, for the demonstration of alkaline phosphatase in granulocytes. The procedure is often referred to as the LAP procedure.

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Solvent Blue 59, Dye content 98 % (1,4-Bis(ethylamino)-9,10-anthraquinone; Atlasol Blue 2N; Sudan Blue)

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Ethyl orange sodium salt 90% (dye content), Sigma-Aldrich®

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Methylene Blue solution has been used to study structural alterations and p53 immune-expression in rats.

Supplier: SIGMA ALDRICH MICROSCOPY

Brilliant Green is a dye and an antiseptic agent.