Fig. 9From: Preparation, characterization and immunological evaluation: canine parvovirus synthetic peptide loaded PLGA nanoparticlesNitric oxide production of J774 macrophage stimulated with free NP, peptide loaded NP and peptide. Significant differences in production of nitric oxide from stimulation are marked with asterisks. Significance levels of *P < 0.05, **P < 0.01, by non-parametric Mann-Whitney U-testBack to article page