for this purpose , we obtained from rat testes : a ) a preparation rich in basement membranes of seminiferous tubules ( stbm ) and b ) a soluble fraction of stbm , non-related to collagen ( d-stbm ) , presenting common antigenic determinants with laminin , the main non-collagen glycoprotein of basement membranes .
C0022984
laminin
C0004799
basement membranes