doi: 10.1007/BF00222047.
Ultrastructure of the prothoracic gland cells of the last instar of Galleria mellonella in relation to the state of development
- PMID: 1149124
- DOI: 10.1007/BF00222047
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Ultrastructure of the prothoracic gland cells of the last instar of Galleria mellonella in relation to the state of development
Cell Tissue Res.
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Abstract
The prothoracic glands of the last instar of Galleria mellonella undergo characteristic alterations of their cellular fine structure closely related to cellular activity. During progressive secretory activity of the gland cells there are extensive plasmalemmal infoldings and formation of a pronounced lacunar system. Mitochondria of the active cell phase are characterized by a specific increase in size and paler colour of the matrix. In contrast to the alterations, nuclei, ER and Golgi cisterns do not undergo any submicroscopic changes during the different phases of cellular activity. The relationship between the substructural phenomena and the specific phases of cellular activity are discussed.
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