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The role of seminal plasma sodium and activation media sodium on sperm motility was examined by selectively removing the element from these two media, in European eel sperm. Sperm size (sperm head area) was also measured using an ASMA (Automated Sperm Morphometry Analyses) system, in the different conditions. Intracellular sodium [Na+]i was quantitatively analyzed by first time in the spermatozoa...
Apoptosis is characterized by the programmed activation of specific biochemical pathways leading to the organized demise of cells. To date, aspects of the intracellular signaling machinery involved in this phenomenon have been extensively dissected and characterized. However, recent studies have elucidated a novel role for changes in the intracellular milieu of the cells as important modulators of...
Abstract. The loss of cell volume is an early and fundamental feature of programmed cell death or apoptosis; however, the mechanisms responsible for cell shrinkage during apoptosis are poorly understood. The loss of cell volume is not a passive component of the apoptotic process, and a number of experimental findings from different laboratories highlight the importance of this process as an early...
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