Figure 3. Retina from β1-adrenergic receptor has reduced insulin-like growth factor binding protein (IGFBP)-3 levels. Representative blots and bar graph of IGFBP-3 protein levels in whole retinal lysates in the β1-adrenergic receptor knockout (KO) mice and their wild-type (WT) controls. *Significance was found at p<0.05 versus wildtype samples. Animal numbers (N) is equal to 6.