1057 Ergebnisse für: "SIGMA ALDRICH MICROSCOPY"

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1-Phenyl-2,3-naphthalenedicarboxylic anhydride,98%

Supplier: SIGMA ALDRICH MICROSCOPY

PolyFreeze is a water-soluble support matrix and a form of embedding medium for frozen sectioning. PolyFreeze sections flawlessly at routine frozen specimen thickness of 5-6 μ and leaves no slide residue. It provides for -20 ºC cryostat sectioning in rapid set embedment. This medium freezes quickly supporting the tissue for sectioning at 3 mm and up with no cracking of the matrix at temperatures from -8 °C to -25 °C.

Supplier: SIGMA ALDRICH MICROSCOPY

Suitable as a laser dye.

Supplier: SIGMA ALDRICH MICROSCOPY

Gill formulation No. 2 may be used for cytology and/or histology as a progressive or regressive stain depending on length of staining time.

Supplier: SIGMA ALDRICH MICROSCOPY

Contains sodium and potassium phosphates. Intended for use in the Sigma Butyrate Esterase Procedure, No. 181B.

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Methylblau, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Silver enhancer solution B has been used in the enhancement of metallic nanoparticles and silver staining.

Supplier: SIGMA ALDRICH MICROSCOPY

This kit may be useful in study of diseases of connective tissue and muscle characterised by fibrotic and dystrophic changes. For in vitro diagnostic use.

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Ethidium bromide monoazide. ≥95% (HPLC), solid (3-Amino-8-azido-5-ethyl-6-phenylphenanthridinium bromide; Ethidium monoazide bromide)

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

Die Differenzierungslösung besteht aus angesäuertem Ethanol oder Isopropanol, das zum Entfärben von Hämatoxylin-Färbung verwendet wird. Die Dauer der Einwirkung der Lösung bestimmt den Grad der Entfärbung. Die Differenzierung ist ein entscheidender Schritt bei der Hämatoxylin-Eosin-Färbung, um den richtigen Farbkontrast zu erzielen, der für die Visualisierung erforderlich ist, indem überschüssiges Hämatoxylin selektiv aus dem Gewebeschnitt entfernt wird und die gewünschte Färbungsintensität zurückbleibt.

Supplier: SIGMA ALDRICH MICROSCOPY

Fluorescein isothiocyanate (FITC) is widely used to attach a fluorescent label to proteins via the amine group. The isothiocyanate group reacts with amino terminal and primary amines in proteins. It has been used for the labeling of proteins including antibodies and lectins. Fluorescein isothiocyanate isomer I has been used for the staining of conidia.
Reagent for the FITC labeling of proteins; Microsequencing of proteins and peptides (HPLC).

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Chrysophenine, Dye content 65 % (Direct Yellow 12)

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5-(Iodoacetamido)fluorescein. ≥90% (HPLC) (5-IAF)

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Fast black K (C.l. 37190) is a lipophilic amino-substituted monoazo dye. It is also known as Brentamine fast black K salt.

Supplier: SIGMA ALDRICH MICROSCOPY

p-Rosolic acid (C.I. 43800) is an acid-baseindicator from the triphenylmethane group. It is also known as aurin and 4-[Bis(4-hydroxyphenyl)methylene]-2,5-cyclohexadienone.

Supplier: SIGMA ALDRICH MICROSCOPY

Suitable for histochemical demonstration of nitro blue tetrazolium reduction in neutrophils.

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Nitro Blue Tetrazolium is a tetrazole compound with two tetrazole rings.

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Eosin B, Sigma-Aldrich®

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Used as a kit component in Procedure 91 for the demonstration of specific esterase activity in peripheral blood smears or paraffin sections.

Supplier: SIGMA ALDRICH MICROSCOPY

2′,7′-Dichlorofluorescein is an oxidation-sensitive fluorescent probe. 2′7′-dichlorofluorescein diacetate is oxidized to 2′7′-dichlorofluorescein in the presence of ROS (reactive oxygen species). 2′,7′-Dichlorofluorescein has been used as an oxidation-sensitive fluorescent probe to measure ROS (reactive oxygen species) formation in cells.

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Resazurin Natriumsalz, Sigma-Aldrich®

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Orcein, Sigma-Aldrich®

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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.

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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.

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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.

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

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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

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