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Histological and Ultrastructural Studies of the Unique Hemopoietic-Endocrine Organ of the Grass Carp, (Valenciennes, 1844).
Microsc Microanal
December 2020
Department of Anatomy and Histology, Faculty of Veterinary Medicine, Assiut University, Assiut71526, Egypt.
Specific features of the immunohistochemical and ultrastructural organization of the hemopoietic head-kidney (HK) in adult Ctenopharyngodon idella (Valenciennes, 1844) were investigated using light and transmission electron microscopy. The HK of grass carp possessed all developmental stages of leucocytes and erythrocytes, as well as dendritic cells and epithelial reticular cells. The rodlet cells were expressed α-smooth muscle actin (SMA).
View Article and Find Full Text PDFMorphological and functional characterization of circulating hemocytes using microscopy techniques.
Microsc Res Tech
July 2020
Department of Animal Health and Management, Alagappa University, Karaikudi, Tamil Nadu, India.
In the present study, Microscopy studies were performed to characterize the blood cells of the mangrove crab Episesarma tetragonum. Three types of hemocytes were observed: granulocytes, semi-granulocytes, and hyalinocytes or agranulocytes. Hyalinocytes have a distinguished nucleus surrounded by the cytoplasm, and a peculiar cell type was present throughout the cytosol, lysosomes with hemocyte types (granules) stained red (pink).
View Article and Find Full Text PDFNitrogen Dynamics in Soil Fertilized with Slow Release Brown Coal-Urea Fertilizers.
Sci Rep
October 2018
School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia.
Reducing the release rate of urea can increase its use efficiency and minimize negative effects on the environment. A novel fertilizer material that was formed by blending brown coal (BC) with urea, delayed fertilizer N release in controlled climatic conditions in a glasshouse, through strong retention facilitated by the extensive surface area, porous structure and chemical functional groups in the BC. However, the role of BC as a carrier of synthetic urea and the effect of their interaction with various soil types on the dynamics and mineralization of N remains largely unclear.
View Article and Find Full Text PDFIdentifying the assembly intermediate in which Gag first associates with unspliced HIV-1 RNA suggests a novel model for HIV-1 RNA packaging.
PLoS Pathog
April 2018
Department of Global Health, University of Washington, Seattle, WA, United States of America.
During immature capsid assembly, HIV-1 genome packaging is initiated when Gag first associates with unspliced HIV-1 RNA by a poorly understood process. Previously, we defined a pathway of sequential intracellular HIV-1 capsid assembly intermediates; here we sought to identify the intermediate in which HIV-1 Gag first associates with unspliced HIV-1 RNA. In provirus-expressing cells, unspliced HIV-1 RNA was not found in the soluble fraction of the cytosol, but instead was largely in complexes ≥30S.
View Article and Find Full Text PDFPhysiological and morphological investigation of Arctic grayling () gill filaments with high salinity exposure and recovery.
Conserv Physiol
June 2017
Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E9.
Freshwater environments are at risk of increasing salinity due to multiple anthropogenic forces including current oil and gas extraction practices that result in large volumes of hypersaline water. Unintentional releases of hypersaline water into freshwater environments act as an osmoregulatory stressor to many aquatic organisms including native salmonids like the Arctic grayling (). Compared to more euryhaline salmonids, Arctic grayling have a reduced salinity tolerance and develop an elevated interlamellar cell mass (ILCM) in response to salinity exposure (17 ppt).
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