Development and anatomy of floral nectary of three species in Swertia L.(Gentianaceae) Reproduction Systems of Two Cultivated "Zangyinchen" Glycoside constituents from Swertia franchetia na TISSUE CULTURE AND ANTIHEPATITIS CONSTITUENT IN CALLI OF SWERTIA FRANCHETIANA H. SMITH Study on the chromatographic fingerprint of Tibet herb Swertia franchetiana by HPLC Spatiotemporal dynamics of the bare soil cover in the Hetian basinal area of County Changting, China, during the past 35 years Eukaryotic Expression of MSTN Gene from Hetian Sheep,Carla Kul Sheep,and Duolang Sheep in the Southern Xinjiang