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Baseline nicotine concentrations were below the limit of quantification in the majority of subjects and mean baseline nicotine concentrations were comparable across study products, all representing less than half the limit of quantification of 0.200 ng/mL

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Research teams from the University of Granada in Spain and the University of Bologna in Italy have studied the process closely, highlighting its potential to improve road performance while cutting down on waste

That asymptomatic shedding, not visible sores, accounts for most transmission