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The structure and composition of the karyosphere (karyosome) capsule of the laboratory insect, Tribolium castaneum, were studied with the use of electron and immunoelectron microscopy. Eight stages that characterized the period of oocyte growth have been established basing on the study of nuclear structure dynamics. At the diplotene stage, T. castaneum oocyte chromosomes are being united early to...
In oocyte nuclei of the scorpionfly, Panorpa communis, we have recently defined a population of nuclear bodies (NBs) that contain some components of Cajal bodies (CBs). In the present study, we used several criteria [presence of coilin, U7 snRNA, RNA polymerase II (pol II) and specific ultrastructure] to identify these NBs as CBs. The essential evidence for CB identification came from experiments...
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