In the quest to heal wounds without leaving a scar, researchers have looked at some 3,000 treatments. Many have not lived up to expectations, and none can induce repair that leaves the skin in pristine condition.

• 在探索如何治疗伤口而不留疤痕的过程中专家们已在近三千的病人进行了试验，其中许多并未达到预期效果，而且没有一例能使受伤的皮肤完全恢复到原来的状态。