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。