Figure 2
From: Lung responses to secondary endotoxin challenge in rats exposed to pig barn air
Immunohistochemical quantification of monocytes/macrophages in the lung. Monocytes/macrophages were stained using ED-1 antibody in the lung sections from control (A), E. coli LPS (B), one day barn exposed rats without and with E. coli LPS challenge (C-D) and five day barn exposed rats without (E) (arrows) and with E. coli LPS challenge respectively (picture not shown) F: Quantification of septal monocytes/macrophages revealed no significant difference among any of the groups (P > 0.05).Original magnification A-F: ×400 and micrometer bar = 50 μm.