Figure 1.

A-F: H&E histology demonstrating the PVI 12 h after instillation of 25 μg LPS (A, B). A massive alveolitis can be seen (C). The leukocytes are mainly ED1 positive monocytes/macrophages (D). MCP-1 expression is demonstrated on the apical epithelium and on the endothelium and most of the leukocytes as well (E control, F MCP-1).