A STUDY ON CRYSTALS IN WOOD SPECIES OF CHINESE ANGIOSPERM COMPARATIVE STUDIES ON SECONDARY PHLOEM OF 7 SPECIES IN SALICACEAE Morphology and Distribution of Calcium Oxalate Crystals in Pinellia pedatisecta Schott (Araceae) Research progress on co-crystal of insoluble active ingredients of Chinese materia medica A Study on Calcium Oxalate Crystals in Several Kinds of Cinnamon Bark Study on processing mechanism of Pinellia ternate Development of silymarin nanocrystals lyophilized power applying nanosuspension technology SEM Observation on Crystals and Silica in Wood Species of Chinese Gymnospermae Preliminary Study on Crystals of Calcium Oxalate of 57 Chinese Medicinal Materials Plant Traditional Culture of Populus euphratica and Populus pruinosa of Uyghurs Folk ——A Case Study in Xinjiang Lopnur Calcium Oxalate Crystals in the Vegetative Organs of Colocasia esculenta (L.) Schott ( Araceae ) and Their Possible Physiological Function THE INACTWATION OF BACILLUS THURINGIENSIS PARASPORAL CRYSTALS BY ULTRAVIOLET ANDTHE PROTECTIVE ACTION OF HUMIC ACIDS Analysis of Variation in Epidermal Structure of Picea pungens Needles