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Carcinogenic agents can be broadly categorized, however, as either activation- dependent or activation- independent , which relate to the agent's ability to engage directly with DNA

Using a new low-cost, 3-D printed testing device, UConn researchers found that e-cigarettes loaded with a nicotine-based liquid are potentially as harmful as unfiltered cigarettes when it comes to causing DNA damage

Bronchospasm occurs when the muscles that line the airways (bronchi) in your lungs tighten and contract

Difficulty chewing or swallowing, speaking or moving your jaw or tongue