Procurou por: Microscópios

Descrição: Five communicating glass tubes with different inner diameters. Used to show capillary forces and how they are affected by the inner diameter of the pipes.

Código de Artigo: 201-0216

UOM: 1 * 1 unid.

Fornecedor: GLASWARENFABRIK KARL HECHT

Promoção

Descrição: The physical properties of proteins kit is a lab activity that enables students to investigate the physical properties of several different proteins. Students will learn about protein solubility and how it is affected by various parameters; including temperature, pH, salt and dielectric constant. They will understand about protein precipitation due to pH, high salt and in the presence of organic solvents and about protein denaturation as a result of high temperature. In addition, the kit will demonstrate how non-protein agents, such as detergents drastically alter the physical properties of protein molecules and as a result, understand the importance of detergents in protein solubilisation. This lab activity involves analysis of three different types of pure proteins and then students alter some of those properties with a detergent and re-examine physical properties of those proteins. Students are challenged to consider how physical properties of protein molecules can be exploited for purification and characterisation of proteins and apply their findings on a test sample of complex tissue extract.

Código de Artigo: BE-401

UOM: 1 * 1 KIT

Fornecedor: G-Biosciences

Promoção

Descrição: 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.

Código de Artigo: BE-502

UOM: 1 * 1 KIT

Fornecedor: G-Biosciences

Promoção

Descrição: This lab activity is designed to demonstrate the different classes of protein molecules and their classification based on solubility. Students learn fractionation of soluble, insoluble membrane proteins, and cytoskeleton proteins from a tissue sample. The insoluble protein fraction is further fractionated into hydrophilic and hydrophobic membrane proteins. Cell membrane structure and the role of hydrophobic membrane proteins are considered. This lab activity also provides an opportunity to understand characteristics of various classes of detergents and the role of detergents in solubilisation of hydrophobic membrane proteins.

Código de Artigo: BE-404

UOM: 1 * 1 KIT

Fornecedor: G-Biosciences

Promoção

Descrição: Five glass tubes of different shape and inner dimensions. Down to each other. When filling the liquid in the pipes, it is clear that the height of the stowage in the tubes. pipes are independent of the design of the pipes. Comes with foot.

Código de Artigo: 765-0969

UOM: 1 * 1 unid.

Fornecedor: GLASWARENFABRIK KARL HECHT

Promoção

Descrição: Drinking water is routinely tested for contamination. If a screening tests positive, more sophisticated tests are required. One such test uses PCR in multiplex format. In this experiment, students test for the presence of three separate, classroom-safe organisms in a water sample using a single PCR reaction.

Código de Artigo: EDVO953

UOM: 1 * 1 unid.

Fornecedor: EDVOTEK

Promoção

Descrição: In this experiment, transformed cells take up a plasmid containing the Green Fluorescent Protein (GFP) gene. The GFP gene was isolated from the jellyfish <i>Aequorea victoria</i>. Transformed colonies expressing the GFP protein are visibly green in normal light but will fluoresce brightly when exposed to longwave UV light.

Código de Artigo: EDVO223/AP08

UOM: 1 * 1 unid.

Fornecedor: EDVOTEK

Promoção

Descrição: Ready-to-Load™ kit for introducing the use of restriction enzymes as a tool to digest lambda DNA at specific nucleotide sequences.

Código de Artigo: EDVO112-C

UOM: 1 * 1 unid.

Fornecedor: EDVOTEK

Promoção

Descrição: When DNA is subcloned in the pUC polylinker region, β-galactosidase production is interrupted, resulting in the inability of cells to hydrolyse X-Gal. This results in the production of white colonies amongst a background of blue colonies. This experiment provides a DNA fragment together with a linear plasmid and T4 DNA ligase. Following the ligation to synthesis the recombinant plasmid, competent <i>E. coli</i> cells are transformed and the number of recombinant antibiotic-resistant white and blue colonies are counted. β-galactosidase activity is assayed from blue and white bacterial cells.

Código de Artigo: EDVO300

UOM: 1 * 1 KIT

Fornecedor: EDVOTEK

Promoção

Descrição: Infectious mononucleosis is commonly known as the 'kissing disease'. The causative agent is Epstein-Barr virus (EBV), which can be transmitted through saliva during kissing. In this experiment, students search for the presence of EBV using the ELISA reaction to detect specific viral proteins.

Código de Artigo: EDVO274

UOM: 1 * 1 unid.

Fornecedor: EDVOTEK

MSDS Promoção

Descrição: Using prestained LyphoProteins, subunit molecular weights are determined by analysis using denaturing SDS vertical polyacrylamide gel electrophoresis. Prestained proteins with unknown molecular weights are assigned molecular weights based on the relative mobility of prestained standard protein markers.

Código de Artigo: EDVO153

UOM: 1 * 1 KIT

Fornecedor: EDVOTEK

MSDS Promoção

Descrição: 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.

Código de Artigo: EDVO103-C

UOM: 1 * 1 unid.

Fornecedor: EDVOTEK

Promoção

Descrição: Observe the differences between mammalian cell types and how these cells funciton. Cells are fixed on microscope slides and students stain the cells on the slide to view morphological characteristics of the cell types. These cells are very safe for classroom use.

Código de Artigo: EDVO986

UOM: 1 * 1 unid.

Fornecedor: EDVOTEK

Promoção

Descrição: Safe drinking water is vitally important to health. Both pathogenic and harmless bacteria can be found in the guts of mammals and birds. Testing water for every possible type of pathogenic bacteria is slow and costly. Thus, water is tested for a characteristic type of gut bacteria - the coliforms - including the familiar <i>E. coli</i>. Presence of coliforms is an indicator for faecal contamination. In this experiment, students test for coliforms in simulated contaminated water using colour and fluorescent reagents. They can use these same reagents to test water samples from the environment. As an extension activity, a Gram Stain test can be performed on the collected samples.

Código de Artigo: EDVO951

UOM: 1 * 1 KIT

Fornecedor: EDVOTEK

MSDS Promoção

Descrição: Genetic modification of plants is a controversial area of biotechnology. All such experiments in plants begin with establishing plant cells in culture. This involves de-differentiating plant cells to form plant 'stem cells'. In this experiment, students establish cell cultures of African violets from leaves. They then use plant growth regulators to encourage root growth from the cultured cells, and produce a mature plant.

Código de Artigo: EDVO908

UOM: 1 * 1 KIT

Fornecedor: EDVOTEK

Promoção

Descrição: This experiment introduces students to Southern blotting as a tool for DNA fingerprinting in a hypothetical paternity determination. DNA fragments are first separated by agarose gel electrophoresis, then transferred to a nylon membrane and finally visualised by staining.

Código de Artigo: EDVO207

UOM: 1 * 1 unid.

Fornecedor: EDVOTEK

Promoção