Signal disorganization delays skin repair

Skin treatments that repeatedly injure tissue may restore collagen yet leave skin slower to recover, and proposed hypothesis asks whether lost spatial instructions are responsible. The proposed test compares matched injuries with equal surviving-cell numbers and collagen. In one skin culture, positional signals, cues that tell cells where and what to become during repair, remain arranged. In the other, the same molecules occur in equal amounts but their layout is mixed. Faster functional repair in ordered culture would support the mechanism. The signals must first be proven to specify cell position, then tested in organized cultures; sensation requires a model with nerve connections.