To predict T-B united epitope of EB gp350/220,B cell epitopes and T cell epitopes of antigen gp350/220 were predicted using the online software IEDB and SYFPEITHIT,respectively,to define the common area of B cell and T cell epitopes,namely the T-B combined epitopes of the antigen.There were potential T-B combined epitopes of antigen gp350/220:28-43,49-55,59-64,69-79,85-91,99-111,119-129,135-144.In this paper,bioinformatics methods were used to determine the presence of five T-cell epitopes,six B-cell epitopes,and three TB-cell joint epitope regions in gp350/220,laying a foundation for the furt...