epitheliotoxin

例句：

1. 1.The epidermal layer of the skin is responsible for protecting it from environmental damage.
   皮肤的表皮层负责保护皮肤免受环境损害。
2. 2.Epidermal growth factor (EGF) is a protein that stimulates cell growth and division.
   表皮生长因子是一种蛋白质，能刺激细胞生长和分裂。
3. 3.In some cases, epidermal cells can become cancerous due to mutations in their DNA.
   在某些情况下，由于DNA突变，表皮细胞可能会变成癌细胞。