1077 Results for: "SIGMA ALDRICH MICROSCOPY"

Supplier: SIGMA ALDRICH MICROSCOPY

Reagent used in the 91A procedure for the demonstration of non-specific esterase activity in leukocytes.

Supplier: SIGMA ALDRICH MICROSCOPY

A cell-permeable generator of singlet oxygen.

Supplier: SIGMA ALDRICH MICROSCOPY

Intended for use in the Gram Stain Procedure No. HT90.

Supplier: SIGMA ALDRICH MICROSCOPY

Thymol blue sodium salt in ACS Reagent grade water 95% (dye content), Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Azure II has been used in the Richardson′s stock solution for the staining of lysosomal glycogen. It has also been used in the periodic acid schiff staining procedure for the staining of glycogen, nuclei and cytoplasm.

Supplier: SIGMA ALDRICH MICROSCOPY

Composition: Nigrosin 100 g/l, Formalin 5 ml/l in water

Supplier: SIGMA ALDRICH MICROSCOPY

Propionaldehyde 2,4-dinitrophenylhydrazone analytical standard, for environmental analysis, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Leukocyte Alkaline Phosphatase (LAP) kits are intended for the semi-quantitative demonstration of alkaline phosphatase activity in white blood cells.

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

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

(Ammoniated ruthenium oxychloride)

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

Benzoyl peroxide (B5907) is specifically formulated as an initiator for these resins.

Supplier: SIGMA ALDRICH MICROSCOPY

Spin trap used in conjunction with Fe²⁺ to detect NO in brain, kidney, liver, and other tissues. Simultaneous direct measurement of NO* and pO₂ has been reported. A copper chelator, it has been used to quantitate copper in biological materials by ESR and is an inhibitor of superoxide dismutase, ascorbate oxidase, and other enzymes. Also used for colorimetric determination of small quantities of arsenic. Silver diethyldithiocarbamate has been used in cell culture. Also used for colorimetric determination of small quantities of arsenic. Spin trap used in conjunction with Fe²⁺ to detect NO in brain, kidney, liver, and other tissues. Simultaneous direct measurement of NO* and pO₂ has been reported. A copper chelator, it has been used to quantitate copper in biological materials by ESR and is an inhibitor of superoxide dismutase, ascorbate oxidase, and other enzymes.

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

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

Reichstein's substance S ≥98%

Supplier: SIGMA ALDRICH MICROSCOPY

Rhodamine B is a xanthene dye, which functions as a water tracer fluorescent. It is used as a colorant in textiles and food stuffs. Rhodamine B is associated with eye, skin and respiratory tract irritation. It is used as a biomarker in oral rabies vaccine.

Supplier: SIGMA ALDRICH MICROSCOPY

o-Cresolphthalein, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Dye content - ≥85%.

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

5,10,15,20-Tetraphenyl-21H, 23H-porphine-p,p′,p,p′′′-tetrasulfonic acid tetrasodium hydrate is a water-soluble porphyrin. It is a negatively charged compound due to the presence of the sulfonate groups. It has been used to functionalize chemically converted graphene to form conductive graphene films of varying thickness.

Supplier: SIGMA ALDRICH MICROSCOPY

Hematein, for microscopy (Hist.).

Supplier: SIGMA ALDRICH MICROSCOPY

Tetrazolium blue chloride (BTC) is a colorless tetrazolium compound that upon reduction forms a colored diformazan. The reactivity has been applied to the analysis of reducing compounds including the nanomolar detection of reducing sugars and carbidopa and methyldopa. BTC has been used for histological staining of mouse coronal brain sections and rat brain sections. In combination with 4-nitrocatechol, tetrazolium blue chloride forms a ternary complex with molybdenum(VI) for extraction and spectrophotometric determination of molybdenum. It has also been used to stain Francisella tularensis cells for tularemic microagglutination test.

Supplier: SIGMA ALDRICH MICROSCOPY

Amyloid protein is detected in tissue with Congo red, a metachromatic stain. Staining is intensified by pretreatment of tissue with alkaline sodium chloride.

Supplier: SIGMA ALDRICH MICROSCOPY

Used to differentiate viable cells from apoptotic cells. Live cells that are not apoptotic accumulate 6-carboxyfluorescein but do not accumulate annexin. Fluorescent wavelengths λex 492 nm; λemm 517 nm in 0.1 M Tris, pH 8.0.

Supplier: SIGMA ALDRICH MICROSCOPY

Nigrosin, alcohol soluble. Nigrosin is a black colored powder. It is widely used to manufacture ink and shoe polish. It is also employed for dyeing leather, wood and textiles. In addition, alcohol soluble nigrosin dye is used in carbon papers, typewriter and ribbons. It is used as an ingredient in rubber repairing lacquer.

Supplier: SIGMA ALDRICH MICROSCOPY

Bathophenanthrolinedisulfonic acid disodium salt hydrate has been used to measure iron to determine the solubility of iron in the biological sample. It has been used as an iron chelator to grow plants without Fe-EDTA (ethylenediaminetetraacetic acid).

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))