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. 2003 Feb 17;197(4):537–542. doi: 10.1084/jem.20021850

Figure 4.

Figure 4.

TLR-4 ligand stimulation circumvents requirement for IL-1R signaling. Adult K/BxN mice were bled and the sera pooled. Adult were injected with 100 μl of pooled sera intraperitoneally on days 0 and 2. In addition, some groups also received an injection of 50 μg LPS intraperitoneally on day 0. C57Bl/6 mice treated with sera are presented as a positive control in each experiment. (A and B) C57Bl/6 treated with sera (closed circle), and LPS and sera (open circle); (C and D) C57Bl/6 treated with sera (closed circle) and IL-1R−/− mice treated with sera and LPS (open square); and (E and F) C57Bl/6 treated with sera (closed circle), MyD88−/− mice treated with LPS and sera (open triangle) and sera alone (closed triangle). Arthritis was clinically scored and ankle thickness was measured with a caliper. The means of 3–4 mice per group ± SEM are shown.