Fig. 4From: Intramuscular injection of human umbilical cord-derived mesenchymal stem cells improves cardiac function in dilated cardiomyopathy ratsHemoxylin-eosin stain of heart tissues derived from the normal control (a), the DCM control (b), the supernatant group (c), the low-dose group (d), and the high-dose group (e). Black bars = 50 μmBack to article page