1050 Results for: "SIGMA ALDRICH MICROSCOPY"

Supplier: SIGMA ALDRICH MICROSCOPY

Azure A, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Brilliant cresyl blue ALD has been used for the staining of reticulocytes.

Supplier: SIGMA ALDRICH MICROSCOPY

Xylene cyanol is often used as a tracking dye during agarose or polyacrylamide gel electrophoresis. It has a slightly negative charge and will migrate in the same direction as DNA, allowing the user to monitor the progress of molecules moving through the gel. The tracking dye typically migrates with the DNA molecules around 5 kb. Xylene cyanol may also be used in loading buffer that facilitates the observation of the sample during gel loading and electrophoresis.

Supplier: SIGMA ALDRICH MICROSCOPY

Sudan IV, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

2,6-Diphenyl-4H-thiopyran-4-one,96%

Supplier: SIGMA ALDRICH MICROSCOPY

Folin & Ciocalteu's phenol reagent is most commonly used in the Lowry method for determining protein concentration. It has also been used for the quantification of total phenolics. In this method, protein is pretreated with copper(II) in a modified biuret reagent (alkaline copper solution
stabilized with sodium potassium tartrate). Addition of the phenol reagent generates chromogens that give increasing absorbance between 550-750nm. Normally, absorbance at the peak (750 nm) or shoulder (660 nm) are used to quantitate protein concentrations between 1 - 100 mg/ml while absorbance at 550 nm is used to quantitate higher protein concentrations.

Supplier: SIGMA ALDRICH MICROSCOPY

Bis(cyclohexanone)oxaldihydrazone (Cuprizone) has been used in mice to study the effect of NG2 (neural/glial antigen 2) proteoglycan on toxic-induced demyelination. It has been used to induce demyelination in mice. It has been used to study cuprizone-induced demyelination and remyelination in the corpus callosum of mice.

Supplier: SIGMA ALDRICH MICROSCOPY

ACCUSPIN System-Histopaque-1077 products are intended for use in the isolation of lymphocytes and other mononuclear cells. The separation medium, Histopaque-1077, is a sterile-filtered, endotoxin-tested solution of polysucrose and sodium diatrizoate, adjusted to a density of 1,077 g/ml. ACCUSPIN System-HISTOPAQUE-1077 employs γ-irradiated 50 mL polypropylene centrifuge tubes specially designed with two chambers separated by a porous high-density polyethylene barrier ('frit'). Each tube is aseptically filled with 15 ml of Histopaque 1077. Each tube will separate 15-30 mL of anticoagulated blood.

Supplier: SIGMA ALDRICH MICROSCOPY

Phosphate buffer's buffering capacity is pH sensitive and is preferred to be used at physiological pH (7,2 to 7,4).

Supplier: SIGMA ALDRICH MICROSCOPY

When mixed with a 4% sodium nitrite solution, a freshly hexazotized pararosaniline solution is produced. May be used in a variety of cytochemistry procedures, including Sigma Procedures 181B and 181C.

Supplier: SIGMA ALDRICH MICROSCOPY

Used for the preparation of electrically conducting glasses. Used to make solutions for the separation of RNA from DNA by density gradient centrifugation.

Supplier: SIGMA ALDRICH MICROSCOPY

Gram’s iodine solution is used as a mordant in the Gram staining process. It is added after the primary staining step with crystal violet; the resultant crystal violet - Iodine complex imparts purple color to the cells.

Supplier: SIGMA ALDRICH MICROSCOPY

2-(5-Bromo-2-pyridylazo)-5-(diethylamino)phenol,97% (Bromo-PADAP).

Supplier: SIGMA ALDRICH MICROSCOPY

Hydroxy naphthol blue disodium salt, ACS reagent.

Supplier: SIGMA ALDRICH MICROSCOPY

General purpose cytoplasmic counterstain. Used with hematoxylin and eosin staining.

Supplier: SIGMA ALDRICH MICROSCOPY

Bromophenol Blue–Xylene Cyanol Dye solution has been used in the formamide loading buffer for the size purification of ligated RNA from polyacrylamide gel.

Supplier: SIGMA ALDRICH MICROSCOPY

Disperse Blue 134, for microscopy (1,4-Bis(isopropylamino)anthraquinone; Solvent Blue 36).

Supplier: SIGMA ALDRICH MICROSCOPY

Fluorescent dye.

Supplier: SIGMA ALDRICH MICROSCOPY

Naphthol AS-D chloroacetate can be used as laboratory chemicals, manufacture of substances.

Supplier: SIGMA ALDRICH MICROSCOPY

Tetrabromophenol Blue (TBPB) belongs to the group of sulfonephthalein acid-base indicators. It is employed in the potentiometric titration of the halogens with Hg₂(NO₃)₂. In addition, it has been used as a dye indicator in urine dipstick test to detect proteinuria. In this assay, with increasing concentration of urinary protein, TBPB sequentially changes colour from pale green to blue. Binding of TBPB to proteins is dependent on pH.

Supplier: SIGMA ALDRICH MICROSCOPY

Erythrosin extra bluish is a brown color powder, that is soluble in ethanol and water. Its pH ranges from 2,5 to 4. It is used in color filters, light emitting diodes, cosmetics, hair dyes and more. It has several biological applications like detecting gene expression, treating age related macular degeneration, diabetes, obesity and more.

Supplier: SIGMA ALDRICH MICROSCOPY

Quinoline Yellow, Dye content 95 % (Solvent yellow 33)

Supplier: SIGMA ALDRICH MICROSCOPY

Fluorescein isothiocyanate isomer I–Celite® has been conjugated with antibody for fluorescence imaging in cells and flow cytometry analysis.

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

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.

Supplier: SIGMA ALDRICH MICROSCOPY

Used for in vitro diagnostic. It is used as a nuclear counterstain in the various Lymphocyte enzyme kits, Procedure No. 181.

Supplier: SIGMA ALDRICH MICROSCOPY

Staining of bacterial spores according to Schaeffer and Fulton; Pappenheim stain when combined with Gram′s stain

Supplier: SIGMA ALDRICH MICROSCOPY

6-Chloro-m-toluidine 99%, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Brilliant Yellow has been used to determine the transfer of inoculum from male moths to females during mating.

Supplier: SIGMA ALDRICH MICROSCOPY

2-(4-Hydroxyphenyl)-5-pyrimidinol 90%, Sigma-Aldrich®