i understand that when stem cells are used to treat injuries using induced pluripotent stem cells (IPS), they can prevent the risk of having any tissue rejection and thus, there isn't a need for use of immunosuppressant drugs.
However, based on the researches using animal models thus far, I note that surgeries are still the main mode of delivery of such stem cell-regenerated organs/organoids. Meaning, to transplant a part of a organ or a tissue into the animal model, a surgery still needs to be done - how is this different from current measures?
Specifically, how are stem cells going to aid or further research into areas such as curing heart or lung diseases and I wonder how are these methods going to be better than current ones.