Ultrastructure of the spleen and head kidney of striped bass

Journal of Aquatic Animal Health
By: , and 

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Abstract

The spleen and head kidney of striped bass Morone saxatilis were examined by electron microscopy, including examination of ultrastructural localization of peroxidase. The spleen is composed of a loosely organized reticulum that supports the red and white pulp. The principal hematopoietic and mature blood cells observed were erythrocytes, erythroblasts, lymphocytes, macrophages, thrombocytes, and aggregates of pigmented macrophages. In addition, limited numbers of neutrophils, neutrophilic myelocytes (immature neutrophils), plasma cells, eosinophils and monocytes were identified. Reticular cells and fibers appeared to provide a structural framework for both cells and blood sinuses in the spleen. Like the spleen, the head kidney contained erythrocytes, macrophages, monocytes, lymphocytes, and other less frequently observed cell types. A distinct difference in the cytologic composition of the two organs, however, was in the greater number of neutrophilic myelocytes found in the head kidney, where these cells were often arranged in groups. Positive peroxidase reactions were observed for neutrophils, neutrophilic myelocytes, macrophage phagolysosomes, and pigmented macrophages in both the spleen and head kidney.

Publication type Article
Publication Subtype Journal Article
Title Ultrastructure of the spleen and head kidney of striped bass
Series title Journal of Aquatic Animal Health
DOI 10.1577/1548-8667(1990)002<0182:UOTSAH>2.3.CO;2
Volume 2
Issue 3
Year Published 1990
Language English
Publisher Wiley
Contributing office(s) Leetown Science Center
Description 12 p.
First page 182
Last page 193
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