cigarette cross section File:Cigarette-key.svg Cross-section of a cigarette filter

Nakajima M, Lemieux AM, Fiecas M, Soujanya C, Hillol S, Nazir S, et al

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A machine-learning classifier based on metagenomic signatures effectively identified EC users, including those who use ECs alone or alongside cigarettes, raising concerns about the safety of ECs and challenging harm reduction claims [62]

If you experience severe wheezing, shortness of breath, blood in your phlegm, or if your cough lasts for more than a month, contact your doctor immediately