Fig. 3From: Protective immunity induced by oral vaccination with a recombinant Lactococcus lactis vaccine against H5Nx in chickensCellular immune responses induced by L. lactis/pNZ8149-HA1-M2. Less than 20 IFN-γ spots were considered not statistically significant (n = 5 chickens/group). Data are represented as the mean ± SD. Asterisks indicate significant differences compared to the PBS and L. lactis/pNZ8149 controls (p < 0.05)Back to article page