Fig. 3.

Cell-cycle regulators inhibit B cell blastogenesis. B cells expressing GFP after nucleofection with plasmids encoding KLF4 (a–d), KLF9 (e–h), PLZF (i–l), or the vector alone were cultured in duplicate with CD40L. Responses were assessed after 4–5 days by determining scatter profiles (a, b, e, f, i, and j), cell number (c, g, and k), and [³H]thymidine incorporation during the final 18 h (d, h, and l). Data are the mean ± SEM. and represent two or more experiments.