The analysis of a second pipe that was used by people living in Central Washington after Euro-American contact revealed the presence of a different tobacco species, the strong tobacco ( Nicotiana rustica ), which was grown by native peoples on the east coast of what is now the United States
But before testing the ancient samples, the team needed a control sample something they could compare the results with and demonstrate what traces of betel nut liquid might look like
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Research team and reflexivity Seven researchers, with professional backgrounds in dentistry, medicine, and health professions education, collaborated on this study
The long-term effects of e-cigarette use are unknown
