Tar and Nicotine content of the main tobacco products used in the study. The following table states the tar and nicotine composition of the various cigarettes used in the study. (+ 1R5F and 3R4F are the names of these cigarettes provided by University of Kentucky for research purposes).
Naik et al. BMC Neuroscience 2014 15:51 doi:10.1186/1471-2202-15-51