Windows domain. A Windows domain is a form of a computer network in which all user accounts, computers, printers and other security principals, are registered with a central database located on one or more clusters of central computers known as domain controllers. Authentication takes place on domain controllers. Each person who uses computers within a domain receives a unique user account that can then be assigned access to resources within the domain. Starting with Windows 2000, Active Directory is the Window
The kidney's glomerular filtration barrier consists of two cellsâpodocytes and endothelial cellsâand the glomerular basement membrane (GBM), a specialized extracellular matrix that lies between them.he glomerular basement membrane (GBM) is the extracellular matrix component of the selectively permeable glomerular filtration barrier (GFB) that separates the vasculature from the urinary space.
Cell membranes are composed of a bimolecular layer of phospholipids and cholesterol, with hydrophilic and hydrophobic regions. Peripheral proteins move along the surfaces and integral proteins are embedded in the lipid bilayer. Some integral proteins extend through both layers (transmembrane proteins). Many of these are glycoproteins with surface carbohydrate units. The cell membrane is the site of the sodium ion pump which maintains cell volume by pumping sodium out of the cell. The outer plasma membrane is permeable to ions, but not to larger molecules. It is also the site for hormone-receptor and cell signal interaction.