Fig. 3From: RETRACTED ARTICLE: Mesenchymal stem/stromal cells as a valuable source for the treatment of immune-mediated disordersMSC-based therapy for treating COVID-19. MSC transplantation can stimulate COVID-19 rescue by affecting immune cells proliferation, differentiation, and activation, through releasing special mediators and triggering cytokine storm alleviation. Mesenchymal stem/stromal cell (MSC); coronavirus disease 2019 (COVID-19)Back to article page