Fig. 1From: Nigella sativa-chitosan nanoparticles: Novel intestinal mucosal immunomodulator controls and protects against Salmonella enterica serovar Enteritidis infection in broilersa TEM Particle characterization (magnification of 1.0 × 106) before entrapping N. sativa oil. Average particle average size is 100 nm. b Particle size distribution of N. sativa-chitosan nanoparticles. c Zeta potential of N. sativa -chitosan nanoparticles. The zeta potential was 23.47 mVBack to article page