dermal collagen

例句：

1. 1.Dermal collagen plays a crucial role in maintaining skin elasticity and youthfulness.
   真皮胶原在保持皮肤弹性和青春方面起着至关重要的作用。
2. 2. The body's ability to produce dermal collagen declines with age, leading to wrinkles and other signs of aging.
   随着年龄的增长，身体产生真皮胶原的能力下降，导致皱纹和其他衰老迹象的出现。
3. 3. Researchers have discovered that dermal collagen can be regenerated through stem cell therapy, offering hope fortreating skin conditions.
   研究人员已经发现，通过干细胞疗法可以再生真皮胶原，为治疗皮肤疾病提供了希望。