Study on microcosmic mechanism about microwave-assisted extraction of Radix Puerariae and Radix Caulis Acanthopanacis Senticosi Pathogenic mechanism of Rhizoctonia solani potato blight Ⅰ Micro-structure observation of the infection process and measurement of cell wall degradation enzyme activity Comparative pollen morphology of Glechoma and Marmoritis (Nepetinae, Lamiaceae) In Vitro Effect of Stylar S-RNase of Pear on the Calmodulin Localization of Pollen Tube Distribution of Al3+ in Subcellular Structure of Root Tips Cells and Aluminum Tolerance in soybean Changes in ultrastructure of fresh leaves of Ginkgo biloba after microwave-assisted extraction