Parasitology, Harold W. Manter Laboratory of


Date of this Version



Published in Acta Protozoologica (2002) 41: 17-22. Copyright 2002, the Polish Academy of Sciences. Used by permission.


The nucleus of Odonaticola polyhamatus was isolated from the body and observed with light, scanning electron and transmission electron microscopy. The nucleus had a thick thread-like structure with which it was tied to the septum. This thread-like structure has not been reported or described previously. The gregarine nuclear surface was covered with a fine fibrous net. This is the first report of the surface structure of a gregarine nucleus as revealed by SEM. Inside the nuclear membrane was a thin honeycomb layer similar to that reported for some other gregarines. Several spherical nucleoli and numerous electron dense small structures were observed inside the nucleus.

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