A Scar is formed when our skin tissues heals itself after an injury. Our skin tissue has collagen. Collagen is a structural protein produced by fibroblasts. Collagen keeps our skin firm and it is usually arranged in a basket weave pattern. When we get injured, our skin tissues get damaged. So, in order to heal and close the wound, fibroblasts produce more collagen. Buy, instead of arranging them in a basket weave pattern, the collagen cross links and arranges in a single direction. As a result, the injured area of the skin appears different from the normal skin. Thus, causing a scar.
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