fetal rat small intestinal epithelial cells ( from the 14th-17th day of gestation ) were exposed to basement membrane-derived proteins ( laminin , collagen type iv , and a complex basement membrane-enriched extract from the engelbreth-holm-swarm sarcoma ) and other extracellular matrix proteins ( collagen type i and fibronectin ) coated onto petri dishes .
C0022984
laminin
C0004799
basement membrane