[Objectives]To determine the biological safety of BT protein from Bacillus thuringiensis(Bt)fermentation broth to mammals at high doses.[Methods]Healthy mice were randomly divided into 4 groups with 10 mice in each gr...[Objectives]To determine the biological safety of BT protein from Bacillus thuringiensis(Bt)fermentation broth to mammals at high doses.[Methods]Healthy mice were randomly divided into 4 groups with 10 mice in each group.The experimental groups were fed with Bt fermentation supernatant at 0.2,0.6 and 1.0 mL/kg,respectively,once a day for 7 consecutive days.The blank control group was fed normally without intragastric administration.[Results]There was no significant difference in blood routine and blood biochemical analysis between the experimental group and the control group.After intragastric administration,the mice were dissected,and no obvious pathological changes were found;the heart,liver,spleen,lung and kidney were taken to make tissue sections,and no pathological changes were found by microscopic observation.[Conclusions]Mice can tolerate high doses of BT protein from B.thuringiensis fermentation broth.展开更多
In recent years,the administrative problems of colleges and universities severely impair the academic and professional dignity of the majority of experts and scholars,and seriously hinder the innovation and progress o...In recent years,the administrative problems of colleges and universities severely impair the academic and professional dignity of the majority of experts and scholars,and seriously hinder the innovation and progress of colleges and universities.Therefore,the“de-administration”reform of colleges and universities has become an urgent task.The article expounds the specific measures and strategies of implementing the“de-administration”reform in colleges and universities from firming faith,fighting a hard battle to the university“de-administration”reform;Strengthening problem orientation and implementing“five leave”;Changing mode,constructing new management mode;Upholding the rule of law for the reform escort;Based on The Times,“relying on the power”of government administration and so on five aspects,It has certain value of the times and practical significance.展开更多
文摘[Objectives]To determine the biological safety of BT protein from Bacillus thuringiensis(Bt)fermentation broth to mammals at high doses.[Methods]Healthy mice were randomly divided into 4 groups with 10 mice in each group.The experimental groups were fed with Bt fermentation supernatant at 0.2,0.6 and 1.0 mL/kg,respectively,once a day for 7 consecutive days.The blank control group was fed normally without intragastric administration.[Results]There was no significant difference in blood routine and blood biochemical analysis between the experimental group and the control group.After intragastric administration,the mice were dissected,and no obvious pathological changes were found;the heart,liver,spleen,lung and kidney were taken to make tissue sections,and no pathological changes were found by microscopic observation.[Conclusions]Mice can tolerate high doses of BT protein from B.thuringiensis fermentation broth.
文摘In recent years,the administrative problems of colleges and universities severely impair the academic and professional dignity of the majority of experts and scholars,and seriously hinder the innovation and progress of colleges and universities.Therefore,the“de-administration”reform of colleges and universities has become an urgent task.The article expounds the specific measures and strategies of implementing the“de-administration”reform in colleges and universities from firming faith,fighting a hard battle to the university“de-administration”reform;Strengthening problem orientation and implementing“five leave”;Changing mode,constructing new management mode;Upholding the rule of law for the reform escort;Based on The Times,“relying on the power”of government administration and so on five aspects,It has certain value of the times and practical significance.
