On Wednesday, the FDA approved Mesoblast Limited’s (NASDAQ:MESO) Ryoncil (remestemcel-L) as the first mesenchymal stromal cell (MSC) therapy in the U.S. Ryoncil is the only MSC therapy approved in the U.S. for any indication and the only therapy for steroid-refractory acute graft versus host disease (SR-aGvHD) in children 2 months and older, including adolescents. Ryoncil contains MSCs, a type of cell that can have various roles in the body and can differentiate into multiple other types of cell