to test the possibility that epidermal cells use a common basement membrane protein whenever they spread , in vitro experiments were conducted using trypsin-dissociated guinea pig epidermal cells and the following proteins : human serum , bovine serum albumin , serum fibronectin , type iv collagen , laminin , and epibolin ( a recently described serum glycoprotein which supports epidermal cell spreading ;
C0022984
laminin
C0017968
glycoprotein