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On your piece about IntregriCulture you say: "To date, growth factors like FBS have been the most important ingredient in the media to trigger cell growth. They have also been the most expensive and ethically questionable - FBS is extracted from the carcasses of animals."

FBS does is not extracted from animal carcasses. FBS is a serum made with the blood of bovine feti harvested after the slaughter of dairy and meat cows. Each fetus, still ialive in the placenta, is taken to a special room in the slaughter house where, through a puncture in the heart, the blood is drawn out in a close circuit to avoid contamination.

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