Sorry, but you are wrong. Human placentas have been used and are still being used to this day. Pharm companies harvest the blood and stem cells from them, and then use the collagen matrix to extract hyaluronan for surgical and high end collagen replacement products. Do you really think that hospitals just throw the placenta away?
No, I am well aware hospitals do not throw the placentas away. I am a ‘veteran’ of the pharmaceutical industry.