Figure 2From: Examining smoking-induced differential gene expression changes in buccal mucosa Buccal mucosa total RNA from smokers and nonsmokers, the group a buccal cell samples. Note variation between the isolates in peak heights and species. Sm Smokers, NS nonsmoker. Sample 1, whole blood total RNA as seen in Figure 1 for comparison, showing 18S and 28S ribosomal peaks. RIN, RNA integrity number; NA no RIN determination possible.Back to article page