title: Schweigger-Seidel sheath or ellipsoid in the spleen of guinea hen.
abstract: Splenic Schweigger-Seidel sheath or ellipsoid was studied by anti-vimentin monoclonal antibodies, clones 3B4 and V9. The 3B4 mAb recognizes a cell type with cytoplasmic granules and long processes which make a network around the endothelial cells of the penicilliform capillaries. The V9 mAb identifies the reticular cells of the spleen which form the supporting system of the Schweigger-Seidel sheath. The sheath covers the entire length of the penicilliform capillary from the central artery, including the branching area. The appearance of the Schweigger-Seidel sheath in a section depends on the section plane; namely, at the branching area its shape is highly irregular, while close to the red pulp it looks like a sleeve. Therefore, the English term "ellipsoid" does not cover the morphological appearance of this unique splenic structure; the Schweigger-Seidel sheath is a correct term.
authors.affiliation: Second Department of Anatomy, Semmelweis University Medical School, Budapest, Hungary.
authors.forename: I
authors.initials: I
authors.lastname: Oláh
authors.forename: A
authors.initials: A
authors.lastname: Kupper
authors.forename: P
authors.initials: P
authors.lastname: Dúcz
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology; D005260:Female; D011200:Poultry; D013154:Spleen / Q000033:anatomy & histology* / Q000378:metabolism; D014746:Vimentin / Q000276:immunology / Q000378:metabolism
chemical_list: D000911:Antibodies, Monoclonal; D014746:Vimentin