Morphological Retrospective Study of Peritoneal Biopsies from Patients with Encapsulating Peritoneal Sclerosis: Underestimated Role of Adipocytes as New Fibroblasts Lineage?

Figure 6

Representative photomicrographs demonstrating histopathological data of endothelial cells marker expression in parietal peritoneal tissues biopsy using immunostaining of CD31 (a). Positive control of immunostainings for used antibodies (internal controls) (a), control: normal peritoneum (b), case of acute peritonitis (control 3; c), and case  1 of encapsulating peritoneal sclerosis (EPS) (d). As compared with normal and acute peritonitis cases, increases in endothelial CD31 expression identifying nonlymphatic vascular network were localized in the deep areas of peritoneum and reflected increased vessels density. Immunoperoxidase staining counterstained with hematoxylin. Original magnification: (a–d) ×20.