pyrimidinedimer

例句：

1. 1.The presence of pyrimidine dimers in the DNA sequence is a hallmark of cancer cells.
   DNA序列中存在嘧啶二聚体是癌症细胞的特征。
2. 2.The study found that exposure to certain chemicals can lead to the formation of pyrimidine dimers in the body.
   研究发现，某些化学物质的暴露可能会导致身体中嘧啶二聚体的生成。
3. 3. In this research, we focused on the role of pyrimidine dimers in the development of cancer.
   在这一研究中，我们关注了嘧啶二聚体在癌症发展中的作用。