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. 2018 Mar 9;9:200. doi: 10.3389/fphar.2018.00200

FIGURE 2.

FIGURE 2

East Indian sandalwood oil suppresses lipopolysaccharide (LPS) induced phosphodiesterase (PDE) activity in cell models. (A) dermal fibroblast (DF), (B) BEAS-2B, (C) A549, and (D) THP-1 cells were treated with vehicle (0), LPS (1 μg/ml) or LPS + EISO at 0.001 or 0.002 % (v/v) for 2 h (open bars) and 4 h (filled bars). Cyclic adenosine monophosphate (cAMP) PDE activity was determined from cell lysates as described in “Materials and Methods.” All values are given as the mean ± SEM (n = 4). p < 0.05, ∗∗p < 0.01, and ∗∗∗p < 0.001 versus unstimulated control; p < 0.05, ††p < 0.01, †††p < 0.001 versus LPS-stimulated cells.