Nasal polyposis has been a source of suffering for patients and a vexing problem for doctors. Polyps are associated with so many different conditions-from aspirin intolerance to infections-so figuring out the body’s processes that bring polyposis about has been a tall order.
Cellular therapy refers to the use of live cells to replace or repair a damaged organ system. The first widespread use of this approach occurred more than 50 years ago when hematopoietic stem cells (HSCs) from the bone marrow of a healthy donor (allogeneic) were used to replace the hematopoietic system of a recipient after it was ablated during chemo/radio therapy of leukemia, the recipient’s hematopoietic system being “collateral damage” during the eradication of the unwanted leukemia cells.