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10.1007/s12010-016-2071-2 42 MeiJ.ShenX.GangL.XuH.WuF.ShengL

Unfortunately, you cannot keep your e-cigarette in your hand baggage

A negative result means that the nicotine or cotinine levels are below the detection threshold, suggesting no significant recent exposure

The countrys human rights context makes the situation even more concerning

Your results will typically appear as either 'positive' or 'negative': A positive result indicates that the nicotine or cotinine level in your sample meets or exceeds the cutoff value set by the kit or laboratory

The constant stimulation of the receptor downregulates its expression to provide the tolerance effect [72]