FIGURE 3.

Cellular colocalizations of Spp lentivirus and various lung markers in the lungs 2 hpi. An anti‐His‐tag antibody was used to recognize S‐fusion protein in the Spp lentivirus. LDLR, MRC1, CD68, and SPC markers were used to stain type II alveolar cells and subtypes of macrophages in the lungs. Yellow arrows indicate cells positive for both His‐tag and corresponding lung markers, including LDLR, MRC1, CD68, and SPC. Red or green arrows indicate cells positive for His‐tag or corresponding lung markers only, respectively. Blue: DAPI staining for nuclei. Scale bar: 20 µm