Figure 5. Electroretinogram analyses on control, β2-adrenergic receptor knockout mice+49b and β2-adrenergic receptor knockout mice. Compound 49b significantly increased the a-wave, b-wave, and oscillatory potentials in the β2-adrenergic receptor knockout (KO) mice. #p<0.05 versus β2-adrenergic receptor KO mice. n = 5 for all groups. Data are mean ± standard deviation (SD).