Studies were performed on female WJ rats.Hindquarter vascular resishatc(HVR)inrats 8￣11 weeks after left coronary thery occluslou was measured.Animal model of perfusedhindquarter with its own blood by pump control wa...Studies were performed on female WJ rats.Hindquarter vascular resishatc(HVR)inrats 8￣11 weeks after left coronary thery occluslou was measured.Animal model of perfusedhindquarter with its own blood by pump control was used.The results showed:①OHVR in rats withmyocardial infarction(MI)rose;②HVR in rats with small myocards inflect size decreased afterlumbar sympethatic chain(LSC)denervation;③HVR in rats with large myocardial infarct size didnot change obviously after LSC denervation. Therefore,neuregenic influence Predominated in mechanism of eleretion of HVR in myoardial infarct rats.展开更多
1988～1989年从北京市、辽宁和黑龙江省等地调查采集的患溃疡病的病株和病果上分离到17个细菌菌株,接种番茄幼苗、果实及叶片,均能产生典型的溃疡病症状,各菌株致病力无明显差异。各菌株经细菌染色反应,形态特征,培养性状,生理生化反应...1988～1989年从北京市、辽宁和黑龙江省等地调查采集的患溃疡病的病株和病果上分离到17个细菌菌株,接种番茄幼苗、果实及叶片,均能产生典型的溃疡病症状,各菌株致病力无明显差异。各菌株经细菌染色反应,形态特征,培养性状,生理生化反应,血清学反应(ELISA法)及蛋白质凝聚丙烯酰胺胶电泳等鉴定,认为番茄溃疡病的病原细菌是:密执安棒杆菌密执安亚种(Clavibacter michiganense subsp.michiganense(Smith)Davies et al.)。试验表明病原细菌可经种子带菌传染,病残体和病土壤可能是初侵染菌源。抗病性测定45个番茄品种均属感病品种。寄主范围除番茄外,尚能侵染茄子、龙葵和心叶烟。展开更多
文摘Studies were performed on female WJ rats.Hindquarter vascular resishatc(HVR)inrats 8￣11 weeks after left coronary thery occluslou was measured.Animal model of perfusedhindquarter with its own blood by pump control was used.The results showed:①OHVR in rats withmyocardial infarction(MI)rose;②HVR in rats with small myocards inflect size decreased afterlumbar sympethatic chain(LSC)denervation;③HVR in rats with large myocardial infarct size didnot change obviously after LSC denervation. Therefore,neuregenic influence Predominated in mechanism of eleretion of HVR in myoardial infarct rats.
文摘1988～1989年从北京市、辽宁和黑龙江省等地调查采集的患溃疡病的病株和病果上分离到17个细菌菌株,接种番茄幼苗、果实及叶片,均能产生典型的溃疡病症状,各菌株致病力无明显差异。各菌株经细菌染色反应,形态特征,培养性状,生理生化反应,血清学反应(ELISA法)及蛋白质凝聚丙烯酰胺胶电泳等鉴定,认为番茄溃疡病的病原细菌是:密执安棒杆菌密执安亚种(Clavibacter michiganense subsp.michiganense(Smith)Davies et al.)。试验表明病原细菌可经种子带菌传染,病残体和病土壤可能是初侵染菌源。抗病性测定45个番茄品种均属感病品种。寄主范围除番茄外,尚能侵染茄子、龙葵和心叶烟。
