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Lesion scores from (A) tracheas or (B) lungs of M. gallisepticum-infected or medium control chickens at 14 dpi. n = 20 total animals per group (n = 10 per group per experiment). Error bars indicate standard errors of the means (SEM), and asterisks (*) and brackets indicate groups significantly different (P < 0.05) in pairwise multiple comparisons.
