Effect of PEA on λ-carrageenin-induced neurogenesis. (A) Nerves formation was evaluated in representative histological analysis of granulomatous tissue stained with hematoxyl and eosin. Fields are representative of 3 separate experiments. Original magnification, 100×. (B) Representative Western blot analysis and relative densitometric analysis of PGP 9.5 protein expression, as a marker of neuronal cells. Results are expressed as mean ± SEM of 3 experiments. *p < 0.05, **p < 0.01, ***p < 0.001 vs. saline; °p < 0.05, °°p < 0.01, °°°p < 0.001 vs. λ-carrageenin alone.