Fig. 2From: Broadly protective immunity against divergent influenza viruses by oral co-administration of Lactococcus lactis expressing nucleoprotein adjuvanted with cholera toxin B subunit in miceHumoral and mucosal immune responses elicited by L. lactis/pNZ8008-NP+CTB. a NP-specific IgG antibodies in the sera (n = 19 mice/group); b NP-specific IgA antibodies in the intestine washes (n = 3 mice/group); c NP-specific IgA antibodies in the upper respiratory washes (n = 3 mice/group). Data are indicated as mean ± standard deviation (SD). Asterisk (*) shows statistical significance compared with PBS, L. lactis/pNZ8008, L. lactis/pNZ8008+CTB or L. lactis/pNZ8008-NP controls (p < 0.05).Back to article page