PRELIMINARY STUDIES ON OUTER MEMBRANE PROTEIN （OMP） PATTERNS OF ESCHERICHI COLI O1, O2 AND O78 ISOLATES OF CHICKEN ORIGI禽源性大肠杆菌O1、O2和O78分离株外膜蛋白型的研究
Cloning of the Douchi Fibrinolytic Enzyme Gene and its Expression in Escherichi coli豆豉纤溶酶基因的克隆及其在大肠杆菌中的表达