Fig. 3: Histopathological analysis of clinical isolate pulmonary disease manifestations.

Three mice were infected with each of the clinical isolates and sacrificed at 17 days post infection. Lungs were inflated, excised, and fixed in 10% neutral-buffered formalin, and stored in 70% ethanol. Lungs were sectioned and stained with hematoxylin and eosin (H&E) or immunohistochemically with antibodies targeting iNOS, CD68, eosinophil protein X (EPX), or CD4/CD8 dual stain. Slides were scanned and a representative image was taken at 20x magnification (right) or of an entire lung lobe (left).