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 Research progress on Chinese materia medica for reversing tumor multidrug resistance Analysis on Internodes length development reversal and genetic model of Cucurbita maxima Study on ligustrazine in reversing multidrug resistance of HepG2/ADM cell in vitro Mechanisms of Chinese materia medica multi-target to reverse MDR of leukemia Studies on Genetic Features of Sex Reversal in Cynoglossus semilaevis Research progress in Chinese materia medica reversing multidrug resistance on tumor cells