thus , although neurite outgrowth-promoting activity in this system is found to be associated with a complex containing laminin , fibronectin , heparan sulfate proteoglycan , and other extracellular matrix molecules , the total size of the functional molecule or molecular complex serving as the major source of activity is limited to 350,000 da .
C0062503
heparan sulfate
C0015350
extracellular matrix