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Table 3 Mean gross lung lesion score (GLLS) and microscopic lesion scoring (standard deviation) in samples from three different anatomical sites of the trachea at different days post-infection (DPI): Cranial trachea (CT), Medium trachea (MT), and Lower trachea (LT) of experimentally inoculated animals with M. hyopneumoniae strain 232. Lungs were scored using the Christensen et al. (1999) [17] methodology. No significant differences (P < 0.05) were found using Tukey test or linear mixed-effects model test adjusted for Tukey

From: Dynamics and chronology of Mycoplasma hyopneumoniae strain 232 infection in experimentally inoculated swine

DPI Control Inoculated
GLLS (%) CT MT LT GLLS (%) CT MT LT
14 0.0 (0.0) 0.5(±0.5) 0 (0.0) 0 (0.0) 13.43 (2.21) 1.0 (0.82) 1.75 (1.7) 2.75 (1.5)
28 0.0 (0.0) 0 (±0.0) 0 (0.0) 0 (0.0) 13.22 (7.07) 2.25 (1.71) 1.75 (0.38) 2.75 (0.96)
42 0.0 (0.0) 0 (±0.0) 0 (0.0) 0 (0.0) 9.61 (7.0) 0.75 (0.5) 1.75 (0.5) 2.25 (1.5)
56 0.0 (0.0) 0.5 (±0.5) 0.5 (0.5) 0.5 (0.5) 8.75 (5.72) 1.5 (1.0) 3.0 (0.81) 3.0 (0.81)