Figure 3.

Influence of the selective β₁-adrenergic receptor antagonist atenolol (10 nM) and the selective β₃-adrenergic receptor antagonist L-748,337 (100 nM) on the effect caused by isoprenaline (10 µM) on (A) the number of lipid droplets (LDs)/positive cells, (B) their area and (C) their Nile Red fluorescence intensity after 72 h of incubation. Results are expressed as percentage of control (solvent) and are presented as mean ± SD from 7−8 independent experiments. * p < 0.05, significantly different from solvent; ^# p < 0.05, significantly different from isoprenaline treatment.