Caspase-2 enzyme activity in infected macrophages induced by RB51 but not by S2308.

<p>(A) Analysis of caspase-2 activities by a colorimetric assay. The asterisk (*) represents significant differences (<i>P</i><0.05) compared to the medium control group. (B) <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0006830#s4f" target="_blank">Western blot analysis</a> of precaspase-2 in infected macrophages. The numbers shown in the figure represent the amounts of procaspase-2 quantified by densitometry and normalized to the β-actin content. The data represent the means±standard deviations from three independent experiments.