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Western blot analysis of serum samples. Immunoblot analyses of serum samples from mice immunized by plasmid DNA are shown. (A) Profiles probed with serum elicited by pSecTag2A/kgpcd. (B) Profiles probed with serum elicited by pSecTag2B/rgpcd. Lanes: a, whole-cell extracts of P. gingivalis ATCC 33277 (40 μg); b, whole-cell extracts of P. gingivalis W50 (40 μg); c, rKGPcd (2 μg); d, rRGPcd (2 μg).
