Conclusion COX-2 overexpression occurred in the early stage of oral carcinogenesis, it could be an important target for the chemicalprevention and therapy.
结论COX - 2在口腔癌变过程中是一个早期事件，可能成为化学预防作用的重要靶点。
2
Many causes of cancer are environmental, largely from tobacco, excessive sun exposure and workplace hazards such as chemical solvents and fumes. Avoidance is the best prevention strategy here.
Scientists at the Centers for Disease Control and Prevention tested the formula for the presence of perchlorate, a chemical used as the main ingredient in solid rocket fuel.