TABLE 2.

GT5-vaccinated chickens have significantly higher proportions of M. gallisepticum-specific IgG and IgA in the tracheal washes than sham-vaccinated chickens after R_low challenge

Day postchallenge	Vaccine/challenge	M. gallisepticum-specific IgG (% of total IgG)a	M. gallisepticum-specific IgA (% of total IgA)a
4	GT5/Rlow	3.2 ± 0.8**	17.2 ± 3.9*
	PBS/Rlow	0.2 ± 0.06	5.3 ± 2.4
8	GT5/Rlow	6.8 ± 1.1**	30.3 ± 5.2*
	PBS/Rlow	1.2 ± 0.7	14.7 ± 4.0
12	GT5/Rlow	5.2 ± 1.4**	25.4 ± 10.1
	PBS/Rlow	0.8 ± 0.07	10.5 ± 1.8
16	GT5/Rlow	4.6 ± 1.7	23.6 ± 13.9
	PBS/Rlow	2.0 ± 1.0	18.6 ± 6.7

^aMean ± standard error of the mean for four chickens per group. *, P < 0.05 between GT5- and PBS-vaccinated chickens at each time point postchallenge; **, P < 0.01.