<i>B. duttonii</i> spirochetemia in mice.

<p>BALB/c (A), NUDE (B), SCID (C), and SCID BEIGE (D) mice. <i>B. duttonii</i> established infection in all four mouse strains. Spirochetemia was significantly (p = 0.02) higher in B-cell-deficient mice (C, D). No differences were observed between wild-type and T-cell-deficient mice (A vs. B) or between SCID mice and NK-cell-deficient SCID BEIGE mice (C vs. D). Data are presented as medians with 25^th and 75^th percentiles. Notice that the scales of the y-axes in this figure differ from those in <a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0000522#pntd-0000522-g002" target="_blank">Figures 2</a> and <a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0000522#pntd-0000522-g004" target="_blank">4</a>.