Fig 2.

Western blotting analysis of binding of FH and sIgA to whole-cell extracts. Binding of FH to cell extracts from different pneumococcal strains was analyzed after incubation with human FH and detection with anti-FH antibodies (A). Binding of sIgA to cell extracts from different pneumococcal strains was analyzed after incubation with human sIgA and detection with anti-sIgA antibodies (B). The serotype and PspC group are shown on top of each blot. St491/00 is a serotype 6B strain from which pspC3 was cloned. The migration of molecular mass standards (in kDa) is indicated on the right.