endothelial primary culture

[Herz-Kreislauf-Physiologie]

dear readers,

we are culturing primary endothelial cells from pig and rat aorta. until
now we coated our dishes with collagen and our cells were quite fine.
since we are interested in gene regulation induced by mechanical forces
we have to grow our cells on a foil, designed to be stretchable. on this
foil we have to use fibronectin as a coat. can you give me a cheap
source of fibronectin, or a good alternative?

thanks in advance

m. cattaruzza