Figure 2.

In vitro migration of peritoneal B cell subpopulations. In vitro chemotactic response to S1P was assessed in a transwell migration assay through a 5 µm membrane. (A) wild-type (WT) peritoneal cells; (B) Migration of B1a cells of WT or s1p₄^−/− with or without Ex26, (C) Migration of B1b cells of WT or s1p₄^−/− with or without Ex26, (D) Migration of B2 cells of WT or s1p₄^−/− with or without Ex26. Values represent the mean and standard error of n = 6 (without Ex26) or n = 3 (with Ex26) per condition.