A cell membrane chromatography method for screening 5-HT receptor agonists from drug pair of Chuanxiong Rhizoma and Angelicae Dahuricae Radix Mechanism of Tongxieyaofang on irritable bowel syndrome Mechanism of antifatigue effect of Seal Oil Soft Capsules Mechanism of antifatigue effect of Seal Oil Soft Capsules Effect of herb pair of Bupleuri Radix and Paeoniae Alba Radix on single amine neurotransmitter in brain of CUMS depression model of rats