I just want to add some trivia about stem cells and the resulting medical research that has happened since stem cells were first discovered back in 1961.
Transplantable stem cells were discovered by two Canadians - Dr. James Till at the Ontario Cancer Institute in Toronto.
Of course, one of the concerns, of the research field that engaged in stem cell research, was how to acquire stem cells. One of the sources for these stem cells was blood - bone marrow and fat both contain precious stem cells. The company who was one of the first to develop technology for harvesting stem cells was Haemonetics.
Haemonetics emerged onto the biotechnology playing field in 1971, I believe, but their technology had been around for a while already. The company was formed out of necessity - When Baxter purchased American Hospital Supply some of the technology that was being produced by AHS, from which current 'bloodless surgery' relies on, was in direct competition to one of Baxter's existing concerns. This was likely another emerging biotech company based in either Europe or Britain. So Haemonetics was born. Just in time to develop stem cell harvesting technology- their early success was based on their stem cell harvesting technology.
What came out of that early technology for stem cell harvesting was the Haemonetics cell saver machine. The "bloodless surgery" that is recommended for JWs relies on cell savers.
Some of the early problems encountered with cell savers was that the re-introduction of a patient's blood often had material in it that was detrimental to the patient's health - bone chips, bone marrow and fat, and malignant cancer cells . So cell savers moved up a notch in its technology - Haemonetics added a filtering system that filtered out (as waste) those elements (which included stem cells). When a person's blood is scavenged with a cell saver, it is "washed' and then re-transfused back into the patient.
The Haemonetics cell saver is just one of the company's tools in its bag of technology that appeals to the stem cell field of research. And, it is the Haemonetics company that is linked to WTS people who work in the field of blood management.