| Description | Product introduction：It is mainly used for the isolation of human peripheral blood lymphocytesMatters needing attention：1. operate under sterile conditions and store at room temperature after sealing. 2. samples, reagents and experimental environment in the whole process shall be Product introduction：It is mainly used for the isolation of human peripheral blood lymphocytesMatters needing attention：1. operate under sterile conditions and store at room temperature after sealing. 2. samples, reagents and experimental environment in the whole process shall be carried out at 20 ± 2 ℃. In order to obtain the best experimental results, it is best to carry out the experiment within 2 h after taking blood. The longer the blood is stored, the worse the cell separation effect is. After the blood is placed for more than 6h, the separation effect is worse or even can not achieve the purpose of separation. 3. in this experiment, it is better not to use plastic products with high polymerization materials (such as polystyrene), but use non-static, low static ionization heart tubes and glass products without alkali treatment, because the electrostatic effect will lead to cell adhesion, and the surface of alkali treated glass will become rough, which will affect the effect of cell separation. 4. aspirating too many lymphocyte layers and separation liquid layers will cause the granulocytes at the junction of separation liquid to be aspirated, thus increasing the number of mixed granulocytes. 5. absorbing too much upper layer solution of lymphocyte layer will lead to the mixing of plasma proteins and platelets. 6. when the blood sample viscosity is too high and needs to be diluted, the optimal dilution method is: dilute and mix the blood and sample diluent (product No.: h9044) 1:1 for standby. Note: improper dilution method will reduce cell yield and activity. If the blood sample is diluted, the centrifugal force and centrifugation time should be appropriately reduced during the separation process. 7. due to the individual differences of blood samples and different blood viscosity, the centrifugal force and centrifugal time should be adjusted. The maximum centrifugal force should not exceed 1000 g.Scope of application：Lymphocyte isolation... Read More | Apatinib(YN-968D1) is an orally bioavailable, selective VEGFR2 inhibitor with IC50 of 1 nM | Aprotinin is a competitive serine protease inhibitor that inhibits trypsin,chymotrypsin,kallikrein and plasmin.Aprotinin forms stable complexes with and blocks the active sites of enzymes. Binding is reversible with most aprotinin,protease complexes and dissociating at pH >10 or <3. Effective Aprotinin is a competitive serine protease inhibitor that inhibits trypsin,chymotrypsin,kallikrein and plasmin.Aprotinin forms stable complexes with and blocks the active sites of enzymes. Binding is reversible with most aprotinin,protease complexes and dissociating at pH >10 or <3. Effective concentration is equimolar with protease.Recombinant aprotinin is expressed in E. Coli, and purified with HPLC. It contains no animal-derived components. This is a recombinant form of bovine lung aprotinin, which is traditionally isolated from bovine lung by methods involving fractional precipitation, gel filtration, and ion exchange chromatography. UNIT DEFINITION:A conversion factor for Aprotinin is: 1 EPU = 1 USP Aprotinin Unit = 1800 KIU... Read More | Purity≥ 95% SDS-PAGE; HPLCRelevanceHuman erythropoietin is member of the EPO/TPO family and encodes a secreted, glycosylated cytokine hormone composed of four alpha helical bundles. The protein is found in the plasma and regulates red cell production by promoting erythroid differentiation and Purity≥ 95% SDS-PAGE; HPLCRelevanceHuman erythropoietin is member of the EPO/TPO family and encodes a secreted, glycosylated cytokine hormone composed of four alpha helical bundles. The protein is found in the plasma and regulates red cell production by promoting erythroid differentiation and initiating hemoglobin synthesis. This protein also has neuroprotective activity against a variety of potential brain injuries and antiapoptotic functions in several tissue types. It is produced by kidney or liver of adult mammals and by liver of fetal or neonatal mammals... Read More | Background：Tumor necrosis factor alpha (TNF-alpha ), also known as cachectin and TNFSF2, is the prototypic ligand of the TNF superfamily. It is a pleiotropic molecule that plays a central role in inflammation, immune system development, apoptosis, and lipid metabolism. Rat TNF-alpha consisitsBackground：Tumor necrosis factor alpha (TNF-alpha ), also known as cachectin and TNFSF2, is the prototypic ligand of the TNF superfamily. It is a pleiotropic molecule that plays a central role in inflammation, immune system development, apoptosis, and lipid metabolism. Rat TNF-alpha consisits of a 35 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane segment, and a 179 aa extracellular domain (ECD). Within the ECD, rat TNF-alpha shares 94% aa sequence identity with mouse and 69%-76% with bovine, canine, cotton rat, equine, feline, human, porcine, and rhesus TNF-alpha. TNF-alpha is produced by a wide variety of immune, epithelial, endothelial, and tumor cells. TNF-alpha is assembled intracellularly to form a noncovalently linked homotrimer which is expressed on the cell surface. Cell surface TNF-alpha can induce the lysis of neighboring tumor cells and virus infected cells, and it can generate its own downstream cell signaling following ligation by soluble TNFR I. Shedding of membrane bound TNF-alpha by TACE/ADAM17 releases the bioactive cytokine, a 55 kDa soluble trimer of the TNF-alpha extracellular domain. TNF-alpha binds the ubiquitous 55-60 kDa TNF RI and the hematopoietic cell-restricted 80 kDa TNF RII, both of which are also expressed as homotrimers. Both type I and type II receptors bind TNF-alpha with comparable affinity, although only TNF RI contains a cytoplasmic death domain which triggers the activation of apoptosis. Soluble forms of both types of receptors are released and can neutralize the biological activity of TNF-alpha. Post-translational modificationsThe soluble form derives from the membrane form by proteolytic processing.The membrane form, but not the soluble form, is phosphorylated on serine residues.Dephosphorylation of the membrane form occurs by binding to soluble TNFRSF1A/TNFR1.O-glycosylated; glycans contain galactose, N-acetylgalactosamine and N-acetylneuraminic acid... Read More |