three human colon cancer lines ( sw480 , sw620 , widr ) secrete different levels of transforming growth factor beta ( tgf beta ) -like and transforming growth factor alpha ( tgf alpha ) /epidermal growth factor ( egf ) -like molecules into serum-free conditioned media as measured by competing activity in tgf beta and egf radioreceptor assays .
C0086418
human
C0242275
egf