Effects of MgIG treatment on histological changes in (A) liver and (B) heart tissues induced by DOX. Representative morphological changes, indicated by black arrows, were stained with hematoxylin and eosin. Scale bar, 50 µm. Magnification, ×400. MgIG, magnesium isoglycyrrhizinate; DOX, doxorubicin; L-MgIG, low-dose MgIG; M-MgIG, medium-dose MgIG; H-MgIG, high-dose MgIG.