Healing of inflammation often involves ingrowth of capillaries filled with RBCs and accompanied by fibroblasts producing collagen. This forms granulation tissue. Here, an acute myocardial infarction is seen healing, with residual normal myocardial fibers at the far left. There are numerous capillaries, and collagen is being laid down to form a scar. Non-infarcted myocardium is present at the far left.