Thromb Haemost 1979; 41(03): 608-621
DOI: 10.1055/s-0038-1646814
Original Articles
Schattauer GmbH Stuttgart

The Nucleated Thrombocytoid Cells. I. Electron Microscopic Studies on Chicken Blood Cells

H Janzarik
The Department of Medicine, Justus Liebig- Universität Giessen, and Department of Theoretical Medicine, Universität des Saarlandes, Homburg/Saar, W–Germany
,
E Morgenstern
The Department of Medicine, Justus Liebig- Universität Giessen, and Department of Theoretical Medicine, Universität des Saarlandes, Homburg/Saar, W–Germany
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Publikationsverlauf

Received 30. Januar 1977

Accepted 24. Mai 1977

Publikationsdatum:
24. Juli 2018 (online)

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Summary

By analyses of electron micrographs it was investigated whether nucleated thrombocytes of chickens described in the literature can be differentiated from lymphoid cells with sufficient certainty as an independent cell system. The result was negative. The mixture of lymphoid cells and so-called thrombocytes investigated was extremely polymorphous and, unlike mammalian platelets, proved to be one cell system containing younger and more mature cells. In the literature cells with signs of overmaturity or activation are designated as thrombocytes. Our studies suggest that a genuine thrombocyte system of chickens and other birds is not existent. The cells hitherto considered as nucleated thrombocytes seem to belong to the lymphoid system.