Infiltration of polymorphonuclear neutrophils (PMN) in the right fronto-parietal neocortex exposed to lipopolysaccharide (LPS) plus hypoxia-ischemia (HI) at 48 hours. (A) Mean ± standard error of the mean percentage of PMN infiltration after LPS + HI-exposure versus control (Ctl) at 48 h. (B) Immunohistochemical staining of PMN (arrows) in the fronto-parietal neocortex of LPS + HI-exposed rats versus Ctl, at 48 h (5 to 6 pups per condition). Scale bar = 50 μm. Unpaired t-test with Welch correction; ***
P ≤ 0.001. h hour, F-P Fronto-parietal.