
Fig. 3. Immunohistochemistry on (A) a section of atrium, (B) a section of ventricle and (C) a section of anterior kidney 48 h after intravenous administration of unlabelled lipopolysaccharide. Reaction product (arrows) was observed within endocardial endothelial cells (A,B) and probably in macrophages (C). Scale bars, 10 µm.