Fig. 2From: Staphylococcus aureus-specific IgA antibody in milk suppresses the multiplication of S. aureus in infected bovine udderAnti-S. aureus-specific IgA and IgG antibodies in milk from cows immunized with FKSA coupled with cCHP nanogel, administered intranasally in 2 weeks intervals in three subsequent doses (OD values). a OD values of anti-S. aureus-specific IgA antibodies in composite milk samples (three cows, n = 3) from cows that underwent repeated nasal immunization with FKSA three times with a two-week interval. b Anti-S. aureus-specific IgG antibodies. Each black circle corresponds to a sample and the bar represents the mean. Nasal immunizations are indicated by arrowheads. *Significant difference between the mean of each group on day 0 and from one to 6 weeks after immunization (P < 0.05)Back to article page