甲基

acetyl group───[有化]乙酰基

benzyl group───[有化]苄基；苯甲基

butyl group───丁基

hexyl group───己基

retail group───零售集团

ethylene group───n.乙烯基

naphthyl group───萘基

In healthy cells a compound called a methyl group is tagged to DNA where it ACTS as a "red light", preventing certain genes from producing proteins.───在正常细胞中，甲基作为DNA标记的一个“红灯”，阻止某些基因合成蛋白质。

Genes get switched off when a chemical mark, a methyl group, is added to the DNA.───DNA的甲基化会使基因表达关闭.

The team looked at methylation, in which a methyl group is placed onto cytosine in DNA sequences.───工作小组关注甲基化作用，是指一个甲基群被放在DNA序列的胞嘧啶上面。

Trigonelline is unstable above 160 degrees F; the methyl group detaches, unleashing the niacin-vitamin b3-into your cup.───胡芦巴碱华氏160度以上时化学性质不稳定，甲基脱落，释放出烟碱酸，也就是维生素b3。