Ann: Mesoblast Director Appointed to Strategic Advisory Role, page-107

"...and unlike most simple molecules it appears we can treat many, many , many diseases with these anti- inflammatory master cells!"

And therein the key. It is a treatment paradigm that utilises about 600 million years of evolution of multicellular life and immunomodulates innate and acquired mechanisms to calm a panicked blunt sledgehammer evolved to get you to the next gene mixing ceremony before you die at 30 (cue cigarette, jazz) but that goes haywire and wipes you out while screaming at you that it's doing it for your own good.
In some ways it is a paradigm shift between the reductio ad absurdum of western science and medicine that drives molecular (drug) treatments to intervene forensically and strategically in analysed biochemical systems and an empirical application of tuned & selected pluripotent cells that have demonstrated capacity to calm the farm, fix the fence, placate the bull in the china shop. Yes, it is momentous.