basement membrane assembly 2009-07-23T05:01:51Z The aggregation, arrangement and bonding together of a set of components to form a basement membrane, a part of the extracellular region that consists of a thin layer of dense material found in various animal tissues interposed between the cells and the adjacent connective tissue. Note that this term has no relationship to 'membrane assembly ; GO:0071709' because the basement membrane is not a lipid bilayer. biological_process GO:0070831 mah basement membrane organization extracellular matrix assembly