the ten cells ' maintenance of endothelial functions , growth in serum-free media , production of growth factor-like activity , and the response to well-characterized purified mitogens ( epidermal growth factor and platelet-derived growth factor ) suggest that these cells may be useful in studying growth control of cerebral microvessel-derived endothelial cells as well as in studies of growth factor production by transformed cells .
C0032200
platelet-derived growth factor
C0018284
growth factor