we conclude that the intravenous injection of heterologous alpha l results in the rapid deposition of alpha l within basement membranes of organs with fenestrated endothelia , laminin is present throughout basement membranes and on the surface of the epithelia adjoining basement membranes , and animals generally do not produce alpha l that binds to autologous or homologous basement membranes .
C0022984
laminin
C0004799
basement membranes