part of start stage end stage basal lamina pronephric glomerulus pronephric glomerular basement membrane Ceri 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. pronephric glomerular filtration membrane 2010-01-29T11:59:03Z TAO:0005313 ZFA:0005313 zebrafish_anatomy unknown larval:days 7-13