Figure 4. Manipulation induced recruitment of monocytes (panel A) to the already dense network of normally resident macrophages (panel B) within the jejunal muscularis. Twenty-four hours after intestinal manipulation, a large amount of ED1⁺ round monocytes can be stained lying within the intestinal jejunal muscularis (A). A dense network of ED2⁺ macrophages could be discriminated in muscularis externa whole mounts from controls using a highly selective monoclonal antibody (B).