After injury, self-healing proceeds in three stages: inflammation, cellular regeneration and differentiation, and tissue replacement. During this process, primordial cells and fibroblast cells are produced. They secrete fibrogen for the construction of tissue fibers. Usually the formation of connective fibers predominates over formation of muscle, capillary, and capsule tissues. Some of this scar tissue will be absorbed and some will persist, which may cause permanent dysfunction of the organs and soft tissue.
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