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1·Other studies have shown that it helps in the synthesis and repair of DNA and that it plays a role in signaling between nerve cells.

已有研究表明：烟酸参与dna的合成和修复，还在神经细胞间的信息传递中发挥作用。

2·Benefits: Helps promote synthesis of collagen and elastic fiber in eye region, repair fine lines and tighten up skin. Leaves skin charming and glowing around eyes.

主要功效：促进眼部胶原蛋白及弹力纤维合成，修复细纹，紧致提升眼部轮廓，令双眸散发动人神采。

3·Both can promote cartilage matrix synthesis, inhibition of cartilage matrix degradation, thereby promoting repair of injured joints.

两者均可以促进软骨基质合成，抑制软骨基质分解，从而促进损伤关节的修复。

4·This, in turn, regulates many of the cell's vital functions, such as the synthesis and repair of DNA, the synthesis of proteins and the activation and regulation of enzymes.

从而，调制了许多细胞的重要功能，包括DNA的合成及修复、蛋白质的合成与酶的活化及调节。

5·The tumor suppressor gene p53 codes for a transcription factor, p53 protein, plays a critical regulation role in oncogene expression, DNA synthesis and repair systems, and cell apoptosis.

抑癌基因p53编码转录因子p 53蛋白在调控癌基因表达、dna合成和损伤修复以及细胞凋亡中起关键作用。