Figure 2. Immunoblot of Rickettsia africae antigens with R. africae–positive and –negative patient serum samples. Lanes 1–3: R. africae–positive patients’ serum samples; lanes 4–5: R. africae–negative patients’ serum samples; lane 6: anti–OmpA monoclonal antibody; lane 7: anti–OmpB monoclonal antibody.
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