自拍偷区亚洲及综合第一页,亚洲av无码潮喷在线观看,最近2019中文字幕一页二页,最近中文字幕高清字幕mv,中文字幕无码人妻少妇免费

Streptavidin Iron Oxide Nanoparticles SHS is a group of water soluble iron oxide nanoparticles with amphiphilic polymer coating conjugated to streptavidin. Their functional group is streptavidin. The zeta potential of SHS is from -20mV to -40mV. Their organic layers consist of a monolayer of oleic acid and a monolayer of amphiphilic polymer. The thickness of the total organic layers is about 4 nm. The hydrodynamic size of the nanoparticles is about 8-10 nm larger than their inorganic core size measured by TEM. The streptavidin molecules are covalently linked to the polymer. SHS is very stable in most buffer solutions. SHS can capture biotinylated molecules such as protein, DNA and peptide. For the reactions to link biotinylated molecules onto SHS, it is necessary to use monobiotinylated molecules, which have only one biotin linked to each biomolecule. Otherwise, the nanoparticles will aggregate. Product Name Description Pricing SHS-10 Streptavidin Iron Oxide Nanoparticles, 10 nm Pricing SHS-20 Streptavidin Iron Oxide Nanoparticles, 20 nm Pricing SHS-30 Streptavidin Iron Oxide Nanoparticles, 30 nm Pricing