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Zur Ultrastruktur der Blutzellen wirbelloser Tiere

IV. Die Hämocyten von Eisenia foetida L. (Sav.) (Annelidae)

Studies on the ultrastructure of invertebrate haemocytes

IV. On the haemocytes of Eisenia foetida L. (Sav.) (Annelidae)

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Summary

In the haemolymph of Eisenia foetida L. (Sav.) two types of blood cells occur: The eleocytes which are released from the chloragogue tissue and the amoebocytes which are derived from the peritoneal endothelium. Chloragosomes are present in the early stage of the eleocytes, later they are replaced by protein vacuoles containing hemoglobin and ferritin. These products are released into the haemolymph. Therefore the chloragogue tissue may be considered as a temporary liquid tissue represented by the eleocytes. The amoebocytes have the form of either cells with pseudopodia having a transport function, or of petal-shaped phagocytes. Both types contain glycogen deposits, lysosomes and bundles of cytoplasmic filaments which grow out of electron-opaque granules. These granules appear to contain trichohyalin which is gradually transformed into filamentous scleroproteins.

Zusammenfassung

In der Hämolymphe von Eisenia foetida L. (Sav.) kommen zwei Blutzelltypen vor: Aus dem Chloragogen freigesetzte Eleocyten und aus dem Peritoneum stammende Amöbocyten. Die Eleocyten enthalten in frühen Stadien typische Chloragosomen, später hämoglobinhaltige Proteinvakuolen mit Ferritineinlagerungen. Diese Einschlüsse werden in die Hämolymphe abgegeben. In der Form der Eleocyten kann das Chloragogen als temporär „flüssiges“ Gewebe aufgefaßt werden. Die Amöbocyten treten entweder in der mit Pseudopodien versehenen Transportform oder in der „petaloiden“ Phagocytoseform auf. Sie enthalten Glykogendepots, Lysosomen und Bündel cytoplasmatischer Filamente, die aus elektronendichten, als Trichohyalineinlagerungen gedeuteten Granula hervorgehen.

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Herrn Prof. Dr. med. J. Staubesand danke ich für wertvolle Hinweise und Kritik.

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Stang-Voss, C. Zur Ultrastruktur der Blutzellen wirbelloser Tiere. Z. Zellforsch. 117, 451–462 (1971). https://doi.org/10.1007/BF00324814

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