Cigarette Smoke Jolts Hundreds of Genes, Researchers Say | LiveScience

"They found that the self-identified smokers in the group – 297 people – were more likely to have unusual patterns of 'gene expression' related to tumor development, inflammation, virus elimination, cell death and more. A gene is expressed when it codes for a protein that then instructs, or kick-starts, a process in the body."Cigarette Smoke Jolts Hundreds of Genes, Researchers Say | LiveScience: