label: pronephric glomerular basement membrane
label_lc: pronephric glomerular basement membrane
description: "Membrane between the pronephric podocytes and the pronephric 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."