维他命B12，同其他的B族维他命一样，对于代谢非常重要。它还对红细胞的形成及维持中枢神经系统功能有积极作用。
Vitamin B12, like the other B vitamins, is important for metabolism. It also helps form red blood cells and maintain the central nervous system.
星形胶质细胞是大脑中枢神经系统主要的一种胶质细胞，在维持大脑功能方面发挥重要的作用。
As major components in central nervus system, astrocytes play an important role in maintaining brain function.
它是多种反应的催化剂，如控制肌肉反应、维持神经系统功能、调节酸碱平衡等。
They serve as catalysts for many reactions such as controlling muscle responses, maintaining the nervous systems, and regulating acid-base balance.
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