Dagney, a couple of little pieces of trivia concerning stem cells and such...
Stem cell technology/biotechnology is one of the riskiest and most volatile markets to invest in (see The Golden Cell by Karen Van Kampen).
Bloodless surgery was the field of biotechnology that profited the most after the AIDS epidemic in the 80s/90s (see Blood: An Epic History of Medicine and Commerce by Douglas Starr).
Bloodless surgery owes its existence to private investors (pg 235, The Red Market by Scott Carney) :
Take the demand for blood. While stocks of blood in the first half of the last century meant surgeons could develop vastly improved surgical techniques, certain religious groups - most notably the Jehovah's Witnesses - were opposed to any sort of blood transfusion. Over the years the complete lack of demand led to private investment and eventually to great strides forward in the field of bloodless surgeries.
It sure would be interesting to know who those "private investors" were. Whoever they were/are, they sure would have a vested interest in keeping the blood ban alive and well.