surface binding assays and immunoelectron microscopic studies also suggested that the analogous 47,000-dalton antigenic component of t. pallidum subsp . pertenue may not have been oriented toward the bacterial surface in the same way as the t. pallidum subsp . pallidum antigen or that the relevant antigenic determinant ( s ) may not have been exposed to the outer surface in the same way .
C0003320
antigen
C0003316
antigenic determinant