Figure 2.
Concentration-dependent changes in lipopolysaccharide-induced tumor necrosis factor-alpha production in monocytic THP-1 cells induced by the α-adrenergic agonist phenylephrine and the β-adrenergic agonist isoproterenol. Results expressed as mean ± SD. LPS: Lipopolysaccharide; NE: Norepinephrine; IPN: Isoproterenol; PE: Phenylephrine.