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All of this could be the beginning of the end of his political career and control of the Republican Party

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1 Introduction Adolescence is a period of brain development during which neurotransmitter systems are actively maturing, with dopamine (DA) exhibiting particularly dynamic changes ( Among teenagers, recreational use of electronic nicotine delivery systems (e-cigarettes) has escalated exponentially ( Initiation of smoking typically occurs during adolescence, with approximately 90% of adult smokers starting before age 18 ( Adolescent rodents, conservatively defined as between postnatal day (P) 28 and 42 (29) and blunted withdrawal symptoms to nicotine compared to adults (30, 31)