glomerular basement membrane
glomerular basement membrane
Membrane between the mesonephric podocytes and the renal glomerular capillaries.  It is a trilaminar structure composed of the fused basement membranes of the glomerular capillaries and basement membrane of the podocytes.  The capillary membranes touch the GBM at contact points that are separated by pores.  The membrane is semi-permeable allowing water and small molecules to pass into the renal capsular space.