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. 2010 Aug 30;207(9):1863–1870. doi: 10.1084/jem.20092514

Figure 2.

Figure 2.

Antibodies raised by the nontoxigenic SpA vaccine block the association of immunoglobulin and vWF with SpA. (A) Rabbit antibodies raised against SpA-DKKAA were affinity purified on a matrix with immobilized antigen and analyzed by Coomassie blue–stained SDS-PAGE under reducing conditions (lane 1, α-SpA-DKKAA). SpA-DKKAA antibodies were treated with pepsin to separate Fc and F(ab)2 (lane 2). The resulting F(ab)2 fragments were repurified by affinity chromatography on SpA-DKKAA (lane 3). (B and C) SpA-DKKAA specific F(ab)2 was added to wild-type SpA, SpA-D, or SpA-DKKAA, and the association with human IgG (B; n = 3) or vWF (C; n = 3) was measured. Data are the means and error bars represent ±SEM. Results in A–C are representative of three independent analyses. *, P < 0.01.