5[3]Roskov I,Roskov F.Serology of Escherichia coli fimbriae[J].Prog Allergy,1983,33:80-105.
6[4]Guinee P A M,Jansen W H.Behavior of Escherichia coli antigens K88ab,K88ac,and K88ad inimmuno-electrophoresis,double diffusion,and hemagglutination[J].Infect Immun,1979,23:700-705.
7[7]Garabal J I,Vazguez F,Blanco J,et al.Colonization antigens of Escherichia coil strains isolated from piglets in Spani[J].Vet Microbiol,1997,54(3-4):321-328.