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Full-Text Articles in Life Sciences
Pycnothyrium Ultrastructure In Tubakia Dryina [Abstract], Josephine Taylor
Pycnothyrium Ultrastructure In Tubakia Dryina [Abstract], Josephine Taylor
Faculty Publications
No abstract provided.
Ultrastructural Observations On The Development Of Some Actinosporean Types Within Their Oligochaete Hosts, Ahmet Özer, Rodney Wootten
Ultrastructural Observations On The Development Of Some Actinosporean Types Within Their Oligochaete Hosts, Ahmet Özer, Rodney Wootten
Turkish Journal of Zoology
Synactinomyxon type 1, aurantiactinomyxon type 3, echinactinomyxon type 5 and raabeia type 4 were studied at the TEM level in order to determine the developmental stages within their oligochaete hosts. All the actinosporean types studied had uninucleate cells as the earliest stage of development. The formation of a subsequent binucleate cell stage was either due to the division of the nucleus in a uninucleate cell or the plasmogamy of two uninucleate cells. The earliest pansporocyst formation seen was two outer somatic cells surrounding two inner generative \alpha and \beta cells in all the actinosporean types studied. However, the formation of …
The Effects Of Precocene Ii On The Fine Structure Of Corpus Allatum In Adult Female Anacridium Aegyptium L. (Orthoptera, Acrididae), Gürsel Ergen
Turkish Journal of Zoology
In this study, the effects of the antijuvenile hormone Precocene II on the corpus allatum of adult females of Anacridium aegyptium L. (Orthoptera) were investigated with electron microscopy. In the insects, topically treated with 500 µg precocene II, the corpora allata did not show marked atrophy or destruction. After 10 or 20 days of precocene II treatment, the ultrastructural changes of especially the nuclei, mitochondria, endoplasmic reticulum membranes, Golgi complexes and some other intracellular organelles in the gland cells, probably reflect a moderate sensitivity to this compound.
Ultrastructure Of 'Turbellaria' (Platyhelminthes), Regina Pfistermuller
Ultrastructure Of 'Turbellaria' (Platyhelminthes), Regina Pfistermuller
Electronic Theses and Dissertations
The systematics of turbellarian platyhelminths (also known as free-living flatworms) has proven difficult since few taxonomically useful characters can be discerned in them. Generally, features of the reproductive tract, observed through conventional light microscopy, provide key taxonomic characters. Through the newer techniques of electron microscopy and fluorescence microscopy, new characters are emerging that provide better clues to the phylogenetic relationships of these animals. We have applied both of these microscopies to representatives of two groups of turbellarians whose phylogenetic positions are uncertain and controversial, the Acoela and the Genostomatidae. Because fluorescence microscopy of phalloidin-labeled acoel turbellarians has provided new taxonomically …
Effects Of Phorbol Myristate Acetate On The Liver: A Biochemical And Ultrastructural Study, Memduha Gülhal Bozkir, Ufuk Ö. Mete, Özkan Oğuz
Effects Of Phorbol Myristate Acetate On The Liver: A Biochemical And Ultrastructural Study, Memduha Gülhal Bozkir, Ufuk Ö. Mete, Özkan Oğuz
Turkish Journal of Veterinary & Animal Sciences
The effects of free radicals in the liver tissue of 20 mice were studied. The mice, separated into acute and chronic groups, were injected with phorbol myristate acetate (PMA) to trigger the release of free radicals. For evaluation of the effects of free radicals, malandialdehyde (MDA) measurement and electron microscopic examination were performed. The results showed that the level of lipid peroxide in the chronic PMA group was significantly higher than it was in the acute PMA group (P