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Immunoelectron microscopy on T. pallidum cells following incubation with or without detergent and immunostaining with anti-rTP0136 antibody (A), the preimmune serum negative control (B), or anti-FlaA (C), followed by incubation with secondary antibody conjugated with gold particles. Bar length is 0.1 μm. TX-100, Triton X-100.
