Fig. 3

Representative images of H&E, Masson and immunohistochemical staining in myocardium (magnification 400×). a H&E staining of myocardium collected from hamsters in Sham operation, AMI, GXV and Tra groups in the 4th and 8th week, postoperatively (n = 3). b,e Masson staining of myocardium collected from hamsters in Sham operation, AMI, GXV and Tra groups in the 4th and 8th week, postoperatively (n = 6). Collagen fibers were stained green and myocardial fibers were red. (c-g) Immunohistochemical staining about positive expressions of Collagen I and Collagen III in myocardium collected from hamsters in Sham operation, AMI, GXV and Tra groups in the 4th and 8th week, postoperatively (n = 3). Collagen fibers were stained brown