Jan 1, 1977

Studies on the morphology of blood of the European eel (Anguilla agnuilla). III. Studies on monocytic and lymphoid cells

Folia haematologica : internationales Magazin für klinische und morphologische Blutforschung
H L Kreutzmann


Investigations concerning the monocytic and lymphocytic cell series were carried out on the peripheral blood and dabbings of the kidney, the spleen and intestines of healthy eels (anguilla anguilla), and eels taken ill with vibrio anguillarum. By means of histological, cytochemical, phaseoptical, and electronmicroscopical examinations independent development lines of the monocytes and lymphocytes were established. The place of origination for the monocytes was found to be the kidney, for the lymphocytes the spleen and the intestines additionally. The evidence of the cytochemical assay of enzymes for the differentiation of these blood cells and their cellular systems is primarily dependent on the distribution of the activity of the unspecific esterase, the naphthol-AS-D-chloroacetate-esterase, the peroxidase and the alkalic phosphatase. Macrophages were - on the basis of enzymocytochemical results - seen as derivatives of the monocytes. Plasma cells and lymphoid cells are transformation forms of the lymphocytes. Our results emphasize the significance especially of cytochemistry for the hematological diagnostics of fish diseases.

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Mentioned in this Paper

Lymphoid Cells
Vibrio Infections
Fish Diseases
Plasma Cells

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