Research progress on meridian-guiding theory of traditional Chinese medicine Detection of agent "zhuanggenling" and investigation of utilization of plant growth retardants in traditional Chinese medicine cultivation Effects of Tongsaimai Prescription and Tongsaimai Prescription without Achyranthis Bidentatae Radix on ischemic brain injuries in rats Research progress in chemical constituents in plant resources of Achyranthis Bidentatae Radix from Aaranthaceae family