Genetic and epigenetic changes also occur when normal cells undergo chronic stress, such as the repeated irritation and inflammation caused by decades of exposure to cigarette smoke and its contents. (sciencedaily.com)
The amount of nicotine in the rats» blood after exposure to cigarette smoke was similar to the amount in blood after humans have smoked one cigarette, confirming that the exposure conditions were relevant to the real world. (sciencedaily.com)
Consider the deadly Stachybotrys mold, which when combined with exposure to cigarette smoke, can cause fatal bleeding in the lungs of babies under 12 months old. (realtormag.realtor.org)