FIG. 5.
M. gallisepticum-specific (A and B) and total (C and D) IgG and IgA concentrations in tracheal washes of GT5- or PBS-vaccinated chickens following Rlow challenge. Significantly higher levels of specific IgG (A) in tracheal washes of GT5-vaccinated chickens were observed, while sham-vaccinated chickens had higher concentrations of specific IgA (B) as well as total IgG (C) and IgA (D). Bars represent the means ± standard errors of the means for four birds at each time point. *, statistical significance at P < 0.05.