Fig. 4From: Bacillus subtilis spore vaccines displaying protective antigen induce functional antibodies and protective potencyAnti-PA IgA response in saliva. *, significant (P < 0.05) difference between groups at the same time point. Mean ± standard error. Abbreviation: Naïve, PBS treated group; N spore group, non-recombinant Bacillus subtilis spore treated group; PA spore group, PA antigen displayed Bacillus subtilis spore treated groupBack to article page