Fig. 2From: The stimulation and inhibition of beta-2 adrenergic receptor on the inflammatory responses of ovary and immune system in the aged laying hensThe comparison of plasma Estradiol (a), Progesterone (b), and Testosterone (c) contents between control and treated groups. (BAA) Beta-2 adrenergic agonist (Salmeterol, 1 mg/kg live BW) and (BB) Beta blocker (Propranolol, 2 mg/kg live BW), Different statistical letters (a-c) are  significant (p < 0.05) according to the Duncan’s multiple range test Back to article page