Peyer's patch (A) total viable cell yield (as determined by trypan blue exclusion) from C3H/HeN mice is significantly different 24 but not 12 hours after CLP. Sepsis (CLP) induces a significant increase in the percentage of mixed Peyer's patch cells that are determined to be (B) A_o+ by DAPI stain. Significance indicated by * at P< .05 versus sham, Mann-WhitneyU test; Mean ± SEM; n = 6 mice sampled /group.