Equine salmonella abortus agglutination test antigen , negative and positive sera .
沙门氏菌马流产凝集斌验抗原、阳性血清与阴性血清。
There are several distinct pathogens : brucella abortus , b. canis , b. melitensis , b. suis , whose identifications correlate with their reservoirs , respectively , cattle , dogs , goats and sheep , and pigs .
Method : choosing three to six months old abortus for primary cultu re , and during the specific culture peri-ods the cells were evaluated by means o f immunochemistry staining and the positive rate was calculated as well .
