6Clements J D, D C. Fint. Immunologi- cal and physical chemical characterization of heat-labile enterot -oxin sisolated from two strains of Escherichia coli. Infect lmmun, 1982(2):806-809.
7de Haan L , Feil I K, Verweij W R , et al . Mutational analysis of the role of ADP- ribosy lation activity and GM1 binding activ- ity in the adjuvant properties of the Es- cherichia coli heat-labile enterotoxin to- wards intranasally administered keyhole limpet hemocyanin. Immunology,1998 (4):1 243-1 250.
8de Haan L ,Verweij WR ,Feil I K, et al. Role of GMI binding in the mucosal im- munogemcity and adjuvant activity of the Es- cherichia coli heat-labile enterotoxin and its 13 subunit.Immunolog y,1998(3):424-430.
9Karpman D, Connell H,Svensson M, et aLThe role of lipopolysac-charideand shiga- like toxin in a mouse model of Escherichia coli O157:H7 infection.J Infect Dis,1997(3): 611-620.
10Moon H W. Pilus production, hemag- glutination, andadhesion by porcinestrains of enterotoxigenic Escherichia coli lacking K88, K99and 987Pantigen.Infect Immun,1982 (1): 305-313.