1071 Results for: "SIGMA ALDRICH MICROSCOPY"

Supplier: SIGMA ALDRICH MICROSCOPY

Acid Green 25, Dye content ≥60 %

Supplier: SIGMA ALDRICH MICROSCOPY

Useful standard for elemental analysis.

Supplier: SIGMA ALDRICH MICROSCOPY

p-Xylene-bis(N-pyridinium bromide). ≥95% (TLC) (DPX)

Supplier: SIGMA ALDRICH MICROSCOPY

Glutaraldehyde bis(2,4-dinitrophenylhydrazone) analytical standard, for environmental analysis, Sigma-Aldrich®

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

Carmine is a cochineal product usually furnished as an aluminum and calcium salt of carminic acid. Carminic acid is used for human-medical cell diagnosis and serves the purpose of the histological investigation of sample material of human origin. It is suitable for staining nuclei in histological sections. It is utilised in various staining methods including the procedure for detection of glycogen and mucous substances (Best′s carmine), for nuclear staining, or vital staining.

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

N-Carboxymethyl-6-(2,2-dicyanovinyl)-1,2,3,4-tetrahydroquinoline. ≥98% (HPLC) (CDCQ)

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

A cell-permeable generator of singlet oxygen.

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

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

(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

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

Dye content - ≥85%.

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

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

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

Supplier: SIGMA ALDRICH MICROSCOPY

Coproporphyrin I tetramethyl ester. ≥90% (HPLC) (Tetramethyl 3,8,13,18-tetramethyl-21H,23H-porphine-2,7,12,17-tetrapropionate)

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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

Suitable for use as a protease substrate.

Supplier: SIGMA ALDRICH MICROSCOPY

For use in procedure no. 395 for Periodic Acid-Schiff (PAS) and Silver Stain Procedure No. HT100.

Supplier: SIGMA ALDRICH MICROSCOPY

Fluorescein diacetate (FDA) is a non-fluorescent molecule, which is hydrolysed to fluorescent fluorescein in live cells. Dead cells cannot accumulate or hydrolyse FDA. Fluorescein diacetate has been used for the differentiation of live cells from dead cells.