Fig. 5From: Tissue-engineered cardiac patch seeded with human induced pluripotent stem cell derived cardiomyocytes promoted the regeneration of host cardiomyocytes in a rat modelCollagen deposition in the grafts at 4, 8 and, 16 weeks after implantation. Visualization of Picrosirius red staining with polarized light microscopy showed thin (type III; green) to thick (type I; yellow) collagen fibers and scaffold fragments (white) in both groups. Over the course of 16 weeks, the cardiac patch gradually degraded and remodeled into collagenous tissue in both the seeded and unseeded groupsBack to article page