Screening for five alkaloids as reversal agents against gastric cancer multiple drug resistance and study on their mechanism Screening for five alkaloids as reversal agents against gastric cancer multiple drug resistance and study on their mechanism Mannose Selection System and Its Commercial Application in Transgenic Corn Phosphomannose Isomerase/Mannose Selection System to Screen Lc14-3-3 Transgenic Chrysanthemum Plants Phosphomannose Isomerase/Mannose Selection System to Screen Lc14-3-3 Transgenic Chrysanthemum Plants New quantificational indexes in modern study of soil organic matter Poplar Transgenic System by Using PMI as Biosafety Selective Marker Effect of asiatic acid on proliferation of multiple myeloma cells and its mechanism Effects of triptolide on cell cycle and expression of P21wap1/cip1 and P27kip1 in human multiple myeloma RPMI 8226 cells Construction of Vitreoscilla Hemoglobin Gene Expression Vector and Its Transformation in Ground-cover Chrysanthemum Construction of plant expression vectors with PMI gene as selection marker and their utilization in transformation of Salvia miltiorrhiza f.alba Application of PMI/Mannose Selective System in Plant Genetic Transformation Study on soil C pool management index of different farmland ecosystems Construction of Binary Expression Vector Containing Cry2Aa2 and PamPAP and Its Transfer to Pepper