Microscopic lesions were categorized as presence (X) or absence (-) and, in those cases where a severity could be attributed to the lesion, the degree of the lesion was specified, i.e., mild (Mi), mod
aclinical scoring was performed as published (21);bgross pathology score in percentage of total lung tissue provided separately for the left and right lobe;canimals with splenomegaly;dall lung lobes w
