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(A) Affected lung severity on a scale of 0% (no lesions) to 100% (entire lung affected). (B) Quantified microscopic lesions (bronchopneumonia, bronchus-associated lymphoid tissue hyperplasia and pleuritis). The distinct colours represent lesion scores 0 (normal), 1 (mild), 2 (moderate) and 3 (intense) [33, 43, 44].
