Figure 4
Effect of PGF on myocardial scar formation after AMI. A: A bar graph showing the average scar area in different groups. Symbols indicate significant differences (P < 0.05) from the control group (#), from the non-treatment AMI group (&), and from the nude PGF group (※), respectively. B: Digital images (×7.5) of tissue sections stained by Masson Trichrome in the control group (B1), AMI group (B2), PGF group (B3) and PGF-PLGANPs group (B4). Red color indicates viable myocardium, while blue color indicates fibrosis due to infarction damage.