5Comerci D J,Pollevick G D,Vigliocco A M, et al. Vec- tor development for the expression of foreign proteins in the vaccine strain Brucella abortus S19 [J]. Infect Immun, 1998,66 : 3862-3866.
6Hailing S M,Detilleux P G,Tatum F M, et al. Deletion of the BCSP31 gene of Brucella abortus by replacement [J]. Infect Immun, 1991,59 :3863-3868.
7Moriyon I, Grillo M J, Monreal D, et al. Rough vaccines in animal brucellosis: structural and genetic basis and present status[J]. Vet Res, 2004,35: 1-38.
8Roset M S,Ciocchini A E,Ugalde R A, et al. Molecular cloning and characterization of cgt, the Brucella abor- tus cyclic beta-1,2 glucan transporter gene,and its role in virulence[J]. Infect Immun, 2004,72 : 2263-2271.
9Comerci D J, Pollevick G D, Vigliocco A M, Frasch A C, Ugalde R A. Vector development for the expression of foreign proteins in the vaccine strain Brucella abortus S19. Infection Immunity, 1998, 66(8): 3862-3866.
10Hailing S M, Detilleux P G, Tatum F M, Judge B A, Mayfield J E. Deletion of the BCSP31 gene of Brucella abortus by replacement.Infection Immunity, 1991, 59(11): 3863-3868.