Well maybe that species evolved over time to get faster and be more durable because of the need to run away from lions and other prey.
It is transplanted routinely to treat a variety of blood and bone marrow diseases, blood cancers, and immune disorders. More recently, stem cells from the blood stream (called peripheral blood stem cells) and umbilical cord stem cells have been used to treat some of the same blood-based diseases
I think it’s all of the above because they can all be found in the air and in water sources
Unless you bring them into your soul. Or your soul puts them in front of you.