12368 Results for: "Absorp\\\\u010Dní+materiály"

Supplier: VWR Chemicals

The ingredients used to prepare culture media are very important, because ultimately the results depend on the quality of these compounds. Raw materials should be stored at 10 to 30 °C unless otherwise stated, in their closed containers in a dry environment.

Supplier: VWR Chemicals

VWR® is a manufacturer and supplier of high quality biochemicals and reagents for molecular biology, life sciences, proteomics, clinical and histology areas of research.

Supplier: ENZO LIFE SCIENCES

FLUOR DE LYS® Developer II is an essential reagent for signal generation in assays done with the FLUOR DE LYS®-HDAC8, FLUOR DE LYS®-SIRT1 and FLUOR DE LYS®-SIRT2 substrates. Deacetylation of the FLUOR DE LYS® substrate sensitises it so that, in a second step, treatment with the FLUOR DE LYS® Developer II produces a fluorophore. Typically, an ‘inhibitor stop’ will be included in the 1X Developer dilution (e.g. nicotinamide for sirtuins).

Supplier: EDVOTEK

Educational Materials, Microbiology, Application: Microbiology, ReadyPour™ LB agar with ampicillin

Supplier: EDVOTEK

ABO and Rh typing of blood left at the scene of a crime can help to narrow down a list of suspects. In this experiment, students use agglutination to identify the blood group of unknown blood samples as a step to identify a criminal.

Supplier: ENZO LIFE SCIENCES

FLUOR DE LYS® deacetylated standard, 10 mm, in DMSO, FLUOR DE LYS®

Supplier: G-Biosciences

Dot blotting is a simple technique to identify a known protein in a biological sample. The ease and simplicity of the technique makes dot blotting an ideal diagnostic tool.

Supplier: DIDALAB

Educational Materials, Optics, Application: Physics, Diode laser, blue, Class II

Supplier: ENZO LIFE SCIENCES

FLUOR DE LYS® Developer is an essential reagent for signal generation in HDAC or sirtuin assays done with the FLUOR DE LYS® substrate. An appropriate FLUOR DE LYS® family substrate, comprising an acetylated lysine side chain, is first incubated with a sample containing HDAC activity (nuclear or cellular extract, purified enzyme, bead-bound immunocomplex, etc.). Deacetylation of the substrate sensitizes it so that, in a second step, treatment with the FLUOR DE LYS® Developer produces a fluorophore. Typically, an ‘inhibitor stop’ will be included in the 1x Developer dilution (e.g. Trichostatin A) for class I and II HDACs, nicotinamide for sirtuins).

Supplier: DIDALAB

Educational Materials, Optics, Application: Physics, Polariser, calibrated, set in an M49 ring

Supplier: LIOFILCHEM

Proteose peptone, 500 g

Supplier: Thermo Fisher Scientific

Replace metal-type troughs with the polypropylene pneumatic trough.

Supplier: ProSci Inc.

Anti-LY-3303560 Recombinant Antibody

Supplier: ProSci Inc.

Anti-LY-3074828 Recombinant Antibody

Supplier: G-Biosciences

Dialysis is a routinely used technique in research laboratories to 'change' the solution a biomolecule is dissolved in. Often the buffers used to isolate biomolecules, such as proteins, are not compatible with downstream applications due to high concentrations of reagents, such as salts. A sample is placed in a bag with a semi-permeable membrane and then placed in the new solution or water. Small molecules, such as salt, can pass through the membrane, moving from an area of high concentration to low concentration. The larger molecules, such as proteins, are retained in the bag. Microdialysis is a modification of dialysis to overcome the problem of dialysing small volumes of precious samples. Microdialysis uses small devices designed for small volumes. This kit allows students to study dialysis using patented microdialysis devices.

Supplier: ProSci Inc.

Anti-LY-2495655 Recombinant Antibody

Supplier: ProSci Inc.

Anti-LY 3090106 Recombinant Antibody

Supplier: ProSci Inc.

Anti-LY-2951742 Recombinant Antibody

Supplier: THERMO FISHER DIAGNOSTICS

Tryptone, 5000 g

Supplier: EDVOTEK

Ready-to-Load™ kit for teaching DNA fingerprinting and to show how DNA evidence is used in modern forensics. This experiment allows for varied results depending on the selection of DNA fingerprinting patterns.

Supplier: ProSci Inc.

Anti-LY-3015014 Recombinant Antibody

Supplier: EDVOTEK

Ready-to-Load™ PCR kit introduces students to the principles and applications of the Polymerase Chain Reaction (PCR). This simulation experiment does not contain human DNA and does not require a thermal cycler.

Supplier: G-Biosciences

Using the Protein Electrophoresis kit, students will learn the principles of various types of electrophoresis, including denaturing and non-denaturing electrophoresis, and how this powerful technique is used to analyse proteins. The kit will introduce students to the different separation matrices currently in use and will understand their differing separation properties and their role in protein analysis. Students have an option of casting their own electrophoresis gels using polyacrylamide or using pre-cast commercially available gels. This kit is provided with all of the reagents, buffers and supplies needed for casting acrylamide gels, preparing protein samples, running electrophoresis, and staining the gels for visualisation of protein bands. Test protein samples and protein standards are also provided.

Supplier: EDVOTEK

DNA obtained from a single hair left behind at a crime scene can be used to identify a criminal. In this experiment, students will compare simulated crime scene DNA with that of two suspects.

Supplier: G-Biosciences

Following restriction enzyme digestion of DNA molecules, researchers need to rejoin the ends of the DNA to generate recombinant DNA, a process known as ligation. Ligation of DNA is achieved with the bacterial enzyme T4 DNA ligase, which catalyses the formation of phosphodiester bonds. The DNA Ligation kit teaches students about ligation as they ligate several DNA fragments together to make larger pieces of DNA that are easily identified by agarose electrophoresis.

Supplier: G-Biosciences

This lab activity involves analysis of an enzyme reaction using a specific enzyme substrate and inhibitor. Students study how the rate of enzyme reaction is dependent on substrate concentration and the influence of agents (inhibitors) and conditions that affects the enzyme reaction such as pH and temperature.

Supplier: G-Biosciences

Bacterial conjugation is a naturally occurring process that allows the transfer of DNA from one bacterium to another, which allows the transfer of genetic traits, particularly drug resistance. The kit contains two bacteria with different drug resistance genes and all the tools for students to study bacterial conjugation. This kit teaches the difference between bacterial genomic DNA and the transferable plasmid DNA and the mechanisms of bacterial conjugation. Students will also learn important basic microbiological techniques, including bacterial growth in liquid broth and on solid agar plates, antibiotic selection of bacteria and important aseptic techniques.

Supplier: EDVOTEK

Suppressor genes, such as p53, are essential for cell functions. Mutations in the p53 gene can be correlated to predisposition for certain cancers. Mutations of genes can either be inherited or accumulated due to environmental insults. This experiment deals with a family pedigree determination of several generations relating to cancer formation due to p53 gene mutation.

Supplier: G-Biosciences

The Hydrophobic Chromatography kit is designed to teach students the basic principle of hydrophobic chromatography utilising a hydrophobic enzyme. The use of the enzyme allows purification followed by a simple enzyme assay to detect the fractions that contain the enzyme. This lab activity involves preparation of a crude protein extract and running hydrophobic chromatography to isolate the enzyme.

Supplier: G-Biosciences

In this lab activity, students learn to perform carefully controlled experiments to generate protein fragments using a proteolysis enzyme and then analyse the protein fragments by electrophoresis. By analysis of protein fragmentation patterns, i.e. protein fingerprints, students learn about protein sequence, structure, and their conservation. Students resolve a set of three functionally identical protein samples selected from throughout the animal kingdom; including human, bovine and sheep. After generating fingerprints by electrophoresis, students examine the protein fingerprint of each sample to determine the degree of conservation.