기사 리스트형 웹진형 타일형 Smoking leaves chemical traces on DNA (Reuters Health) By Kathryn Doyle - Tobacco smoke leaves its mark on DNA by changing a chemical code on the DNA molecule that can sometimes change gene activity, according to a new study.Some of these molecular changes revert to their original state when a smoker quits, but others persist in the lon 2016-09-22 07:24 처음처음1끝끝
