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Articles 1 - 5 of 5
Full-Text Articles in Life Sciences
Primary Utricle Structure Of Six Halimeda Species And Potential Relevance For Ocean Acidification Tolerance, Katherine E. Peach, Marguerite S. Koch, Patricia Blackwelder, Debbie Guerrero-Given, Naomi Kamasawa
Primary Utricle Structure Of Six Halimeda Species And Potential Relevance For Ocean Acidification Tolerance, Katherine E. Peach, Marguerite S. Koch, Patricia Blackwelder, Debbie Guerrero-Given, Naomi Kamasawa
Marine & Environmental Sciences Faculty Articles
Variations in utricle morphology may be responsible for different tolerances to ocean acidification (OA) within the macroalgal genus Halimeda, an important sediment producer on reefs. However, differences in species’ utricle morphology and their relationship to calcification and crystal formation have not been well articulated. In the present study, we characterized the utricle morphologies of six Halimeda species. Primary utricle ultrastructure was quantitatively and qualitatively compared to tissue inorganic content and crystal microstructure. Morphologies differed across species and several morphometric relationships were revealed. Primary utricle size (r2=0.70) and diffusion pathway length (r2=0.87) had inverse relationships with …
Water Ph Effects On Survival, Reproductive Performances, And Ultrastructure Of Gonads, Gills, And Skins Of The Javanese Medaka (Oryzias Javanicus), Ahmad Fadhil Mohd Salleh, Mohammad Noor Amal Azmai, Nurrul Shaqinah Nasruddin, Syaizwan Zahmir Zulkifli, Ferdaus Mohamat Yusuff, Wan Norhamidah Wan Ibrahim, Ahmad Ismail
Water Ph Effects On Survival, Reproductive Performances, And Ultrastructure Of Gonads, Gills, And Skins Of The Javanese Medaka (Oryzias Javanicus), Ahmad Fadhil Mohd Salleh, Mohammad Noor Amal Azmai, Nurrul Shaqinah Nasruddin, Syaizwan Zahmir Zulkifli, Ferdaus Mohamat Yusuff, Wan Norhamidah Wan Ibrahim, Ahmad Ismail
Turkish Journal of Veterinary & Animal Sciences
The Javanese medaka (Oryzias javanicus) has the potential to be developed as a test organism. It also exhibited many characteristics that are similar to those of well-known laboratory fishes. This study determined the effects of water pH on the survival, reproductive performances, and ultrastructure of the gonads, gills, and skins of the Javanese medaka. This study confirmed that Javanese medakas treated with pH 6-7 displayed the lowest mortality, but increased in egg production and hatchability. This supposition is supported by strong evidence from the oocytes and testes stage analyses, including histological examinations. The ultrastructure of gills and skins of fish …
Ultrastructure Of Rat Umbilical Cord Stroma-Derived Mesenchymal Stem Cells, Ahmet Ceylan, Özge Özgenç, Korhan Altunbaş, Petek Korkusuz, Asuman Özen
Ultrastructure Of Rat Umbilical Cord Stroma-Derived Mesenchymal Stem Cells, Ahmet Ceylan, Özge Özgenç, Korhan Altunbaş, Petek Korkusuz, Asuman Özen
Turkish Journal of Veterinary & Animal Sciences
Being multipotent progenitor cells, mesenchymal stem cells continue to attract attention as a promising tool for cell-based therapy and tissue engineering. However, research on the ultrastructure of these cells is rather scarce. This study was aimed at the investigation of the transmission electron microscopic ultrastructure and morphology of mesenchymal stem cells isolated from the stroma of rat umbilical cord using the explant culture method. At the end of the third passage, some of the cells isolated from the stroma of the umbilical cord were harvested for electron microscopic examination. The remaining cells were induced for osteogenic, chondrogenic, and adipogenic differentiation. …
Ultrastructure Of Apoptotic T Lymphocytes And Thymicepithelial Cells In Early Postnatal Pig Thymus, Ahmet Ceylan, Belma Alabay
Ultrastructure Of Apoptotic T Lymphocytes And Thymicepithelial Cells In Early Postnatal Pig Thymus, Ahmet Ceylan, Belma Alabay
Turkish Journal of Veterinary & Animal Sciences
The thymus is a primary lymphoid organ that provides the microenvironment required for the development of T lymphocytes. Thymic epithelial cells (TECs) are among the most critical components in the thymic microenvironment supporting thymocyte selection and maturation. Apoptosis is primarily a physiologic process that plays a major role during the development of T lymphocytes. The first purpose of this study was to examine morphological changes in apoptotic thymocytes by transmission electron microscope in piglets. The second purpose was to reveal the morphological typology of TECs in piglets. Tissue samples of the thymus were taken from healthy Yorkshire race pigs of …
Fine Structure Of The Malpighian Tubules In Gryllus Campestris(Linnaeus, 1758) (Orthoptera, Gryllidae), Irmak Polat, Nurcan Özyurt, Damla Amutkan, Zeki̇ye Suludere, Selami̇ Candan
Fine Structure Of The Malpighian Tubules In Gryllus Campestris(Linnaeus, 1758) (Orthoptera, Gryllidae), Irmak Polat, Nurcan Özyurt, Damla Amutkan, Zeki̇ye Suludere, Selami̇ Candan
Turkish Journal of Zoology
The Malpighian tubules are responsible for excretion and osmoregulation in insects. The Malpighian system consists of tubules that are closed at the distal end and extend from the point of junction of the midgut and hindgut. This organ helps the water and electrolyte balance of the internal metabolism by filtration with absorption of water and soluble materials as mineral salts from the hemolymph. In this study, the histology of Malpighian tubules in Gryllus campestris (Orthoptera, Gryllidae) has been examined in detail by light microscopy, scanning electron microscopy, and transmission electron microscopy. The distal ends of the Malpighian tubules in G. …