Fig. 5

Immunohistochemistry of PPARγ in canine lung tissue. The respiratory epithelium of bronchi and large bronchioles exhibited immunoreactivity of PPARγ, most strongly in the goblet cells (a) and engorged peribronchiolar interstitial macrophages that were often filled with carbon particles (b). Some of the primary pulmonary adenocarcinomas (c) and metastatic osteosarcomas (d) expressed positive immunoreactivity. Bar = 100 μm