Kinetics of nitric oxide (NO) levels in the hippocampus (HC) of male (A) and female (B) rats following a single intraperitoneal injection of either lipopolysaccharide (LPS) or phosphate-buffered saline (PBS) as a control over 72 hours in PND2. The significance level is 0.05. *p < 0.05 vs. PBS group, according to two-way ANOVA following post-hoc (comparisons Bonferroni’s multiple comparisons test).