however , a murine teratocarcinoma cell-line , m1536-b3 , has been described which produces an extracellular matrix ( ecm ) composed of some of the known components of bm , e.g. , laminin , entactin , and sulfated proteoglycan , but lacking type iv collagen ( chung et al. , 1979 , cell , 16:277-287 ) .
C0015350
extracellular matrix
C0059377
entactin