Ultrastructural changes in cell death
نویسندگان
چکیده
منابع مشابه
Cumulus cell expansion and ultrastructural changes in in vitro matured bovine oocytes under heat stress
Cumulus-oocyte complexes (COCs) from cows were matured under normal (38.5°C) and elevated temperatures (41°C) simulating heat stress and their maturation was assessed based on measurement of cumulus expansion in both groups. There was a significant reduction (P
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Purpose: Our aim was determination of the sheep oocytes ultrastructural changes follow vitrification and in vitro maturation. Materials and Methods: Good quality isolated cumulus-oocyte complexes (COCs) were randomly divided into non-vitrified control, conventional straw, cryotop and solid surface vitrification groups. In the conventional and cryotop methods the vitrified COCs were plunged dire...
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The structural changes associated with the ultraviolet-induced bleaching of light-grown cells of Euglena gracilis were investigated. Our lightand electron-microscopic observations of the bleaching process indicate that there is a continuity of plastid structure in cells 5 generations after receiving a bleaching dose of ultraviolet light. There seems to be a continuous dilution of the plastid th...
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Follicular atresia is a phenomenon that leads to evacuation of the ovary from the oocytes and the occurrence of menopause. The contribution of various types of cell death in atresia at different follicular developmental stages requires extensive investigation. In this study, we evaluated 3 types of programmed </...
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Ultrastructural differences in the tracheal gland between young and aged rats were studied. Marked differences were observed in the serous cells between the young (8-17 week-old) and the aged (20-30 month-old) subjects. The secretory granules of the serous cells of the young subjects were homogeneously electron dense, whilst those of the aged subjects had a bizonal appearance. These bizonal gra...
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ژورنال
عنوان ژورنال: Journal of Oral and Maxillofacial Pathology
سال: 2017
ISSN: 0973-029X
DOI: 10.4103/jomfp.jomfp_137_17