1066 Results for: "SIGMA ALDRICH MICROSCOPY"

Supplier: SIGMA ALDRICH MICROSCOPY

Naphthol yellow S has been used as a staining agent in fixed human embryonic stem cell-derived cardiomyocytes.

Supplier: SIGMA ALDRICH MICROSCOPY

Fluorescent stain for rapid detection of yeasts, fungi and parasitic organisms. Calcofluor white is a non-specific fluorochrom that binds to cellucose and chitin in cell walls.

Supplier: SIGMA ALDRICH MICROSCOPY

Acridine Yellow G (AYG) is an organic dye with photophysical properties. It is widely used in optics, medicine and photovoltaic cells.

Supplier: SIGMA ALDRICH MICROSCOPY

Sudan orange G belongs to the group of azo dyes, which are synthetic organic colorants. Members of azo dyes contain chromophoric azo groups (-N-N-).

Supplier: SIGMA ALDRICH MICROSCOPY

2-Sulphobenzoic cyclic anhydride ≥90%, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Azure A is a basic cationic dye. The combination of azure A and silver staining is used for the quantification of glycosaminoglycans in agarose gels. It is also used for the staining of chromosomes in the nucleus. It is a main component of the azure B/polychromed methylene blue – eosin stains family, also referred to as the Romanowsky stain.

Supplier: SIGMA ALDRICH MICROSCOPY

Useful standard for elemental analysis.

Supplier: SIGMA ALDRICH MICROSCOPY

Readily polymerizes 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 Cγ in PC12 cells. Inhibits apoptosis. It prevents down-regulation of Ca²⁺ -impermeable GluR2 receptors and inhibits calpain, a Ca²⁺ -activated protease that is activated during apoptosis.

Supplier: SIGMA ALDRICH MICROSCOPY

Fast Blue RR has been used to detect alkaline phosphatase activity.

Supplier: SIGMA ALDRICH MICROSCOPY

Wright Stain solution, for microscopy (Eosin Methylene blue solution according to Wright; Wright's eosin methylene blue)

Supplier: SIGMA ALDRICH MICROSCOPY

Thymol iodide, (4,4'-Bis(iodooxy)-2,2'-dimethyl-5,5'-bis(1-methylethyl)-1,1'-biphenyl)

Supplier: SIGMA ALDRICH MICROSCOPY

Hartman′s fixative, which is also known as Davidson′s Fixative, contains acetic acid, alcohol, and formalin. It is widely used for the preservation of eye, bone marrow, breast, testis, and other tissues for histologic examination

Supplier: SIGMA ALDRICH MICROSCOPY

2-Methoxy-4-nitrophenol 97%, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

3,3′-dihexyloxacarbocyanine iodide (DiOC6) is a supravital lipophilic fluorochrome. This cationic dye is employed to stain mitochondria and endoplasmic reticulum in animal and plant cells. In addition, it acts as a very rapid, consistent and highly selective fluorochrome for endophytic ascomycetes in plant roots and liverworts. DiOC6 also facilitates the detection of different mitochondrial changes happening during early apoptosis.

Supplier: SIGMA ALDRICH MICROSCOPY

3,3'-Dipropylthiacarbocyanine iodide,98% (3-Propyl-2-[3-[3-propyl-2(3H)benzothiazolylidene]-1-propenyl]benzothiazolium iodide; DiSC3(3))

Supplier: SIGMA ALDRICH MICROSCOPY

Pepsin is used for proteolytic digestion of formalin-fixed paraffin-embedded (FFPE) tissue sections prior to application of antibodies. In immunohistochemistry (IHC), most commonly used fixatives such as formalin mask tissue antigens (cellular, membrane, and nuclear) by their intrinsic crosslinking. This masking results in poor or no staining in IHC. Pepsin digestion of FFPE tissue sections improves accessibility of antibodies to tissue antigens. Ready to use pepsin reagent, antigen retriever has been used for antigen unmasking in immunohistochemistry.

Supplier: SIGMA ALDRICH MICROSCOPY

When immobilised using an insoluble porous support matrix such as agarose, Cibacron Blue 3GA is used for affinity chromatography purification of enzymes. This affinity has been attributed to a structural similarity between the dye and the natural ligands for proteins with cofactor binding domains.

Supplier: SIGMA ALDRICH MICROSCOPY

Aniline blue is used to stain collagen fibers in tissue sections using the Masson′s trichrome protocol for staining multiple components. Collagen is stained blue by this method. It has also been used to stain and visualize glycosylated proteins.

Supplier: SIGMA ALDRICH MICROSCOPY

Fontana-Masson staining is used for the demonstration of argentaffin substances such as melanin, argentaffin granules and some neurosecretory granules. Staining patterns may be useful in cases of carcinoid tumors and melanoma.

Supplier: SIGMA ALDRICH MICROSCOPY

(Ammoniated ruthenium oxychloride)

Supplier: SIGMA ALDRICH MICROSCOPY

Fluoroshield™ with PPD (p-phenylenediamine; 1,4-phenylenediamine) is an aqueous mounting medium for preserving fluorescence of tissue and cell smears.

Supplier: SIGMA ALDRICH MICROSCOPY

Histology slides with paraffin embedded section of human intestine containing argentaffin granules. Suitable for use with Fontana-Masson stain kit (Procedure No. HT200).

Supplier: SIGMA ALDRICH MICROSCOPY

Oil Red O stains lipid materials and imparts red-orange color to the lipids. It also marks vacuoles, particularly observed in ALL-L3 (acute lymphoblastic leukemia) or Burkitt′s lymphoma/leukemia. Oil Red O staining is done on fresh samples, as alcohol fixation removes lipids.

Supplier: SIGMA ALDRICH MICROSCOPY

Orange II sodium salt,(Certified by the Biological Stain Commission), Dye content ≥85 % (4-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt; Acid Orange 7; Acid Orange A; Orange II; Tropaeolin 000 No. 2).

Supplier: SIGMA ALDRICH MICROSCOPY

Mordant Blue 9, Dye content 50 % (6-(5-Chloro-2-hydroxy-3-sulfophenylazo)-5-hydroxy-1-naphthalenesulfonic acid disodium salt; 6-(5-Chloro-2-hydroxy-4-sulfonphenylazo)-5-hydroxy-1-naphthalene-sulfonic acid sodium salt)

Supplier: SIGMA ALDRICH MICROSCOPY

N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride ≥95%, powder, Sigma-Aldrich®

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

Fast Blue BB Salt hemi (zinc chloride) salt, also known as Cl Azoic diazo 20 (Cl 37175) is a diazonium salt that possesses a lipophilic amine lipophilic with an aromatic system of moderate size. It is commercially available as the zinc chloride double salt. It has been used for alkaline phosphatase staining in cells.

Supplier: SIGMA ALDRICH MICROSCOPY

Fast green FCF, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Thioflavin T is a benzothiazole dye that increases in fluorescence upon binding to amyloid. Thioflavin T has been used in histology and for protein characterization.