细胞色素

例句：

1. 1. The cytochrome c plays a crucial role in the process of cellular respiration.
   细胞色素c在细胞呼吸过程中起着至关重要的作用。
2. 2. Cytochrome c is a protein that helps cells to carry out their functions.
   细胞色素c是一种蛋白质，有助于细胞执行其功能。
3. 3. In addition to its role in cellular respiration, cytochrome c also plays a significant role in the immune system.
   除了其在细胞呼吸中的作用外，细胞色素c还在免疫系统中发挥着重要作用。