what makes up the filtration membrane
The kidney's glomerular filtration barrier consists of two cellsâpodocytes and endothelial cellsâand 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.