A Dartmouth study conducted on fruit flies reports the first evidence in any organism that oocytes—the cells that become eggs—regularly rejuvenate the critical protein linkages that bind chromosomes together. The findings ...
Cell & Microbiology
Jun 12, 2024
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Safe and high-quality fertility preservation is of growing significance for women in clinical trials. Current primary methods for cryopreserving human oocytes are slow freezing and vitrification, but existing techniques pose ...
Bio & Medicine
May 15, 2024
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Elaborate observations reveal the structural specialization within an epithelial layer covering oocytes in the Japanese pill-millipede, Hyleoglomeris japonica, considered absent in Myriapoda. Comparing this result with previous ...
Plants & Animals
May 7, 2024
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Cytoplasmic streaming is the large-scale motion of cytoplasm (i.e., gelatinous liquid inside cells) inside a living cell. This flow, known to regulate various intracellular processes, can vary greatly between different cell ...
Oocytes are immature egg cells that develop in almost all female mammals before birth. The propagation of future generations depends on this finite reserve of cells surviving for many years without incurring damage. In mice, ...
Cell & Microbiology
Feb 20, 2024
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Northwestern Medicine scientists have identified how cytoskeletal proteins contribute to the growth of developing eggs in fruit flies, findings that further the field's understanding of how egg cells form and differentiate ...
Cell & Microbiology
Oct 10, 2023
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How do you study reproductive aging, the biological clock that affects fertility, in the lab? Researchers at Howard Hughes Medical Institute's Janelia Research Campus use a surprising animal: the roundworm C. elegans.
Cell & Microbiology
Sep 14, 2023
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The many types of cells in the human body are produced through the process of differentiation, in which stem cells are converted to more specialized types. Currently, it is challenging for researchers to control the differentiation ...
Cell & Microbiology
May 25, 2023
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Ultrasuperovulation is an advanced technique that significantly increases the number of oocytes produced by female mice. However, existing ultrasuperovulation techniques have a low fertilization rate, probably caused by the ...
Plants & Animals
Mar 13, 2023
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36
Human development starts from the fertilization of a fully matured oocyte. Oocyte maturation, fertilization, and early embryo development before zygotic activation is characterized by the absence of new transcription from ...
Cell & Microbiology
Jan 19, 2023
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3
An oocyte, ovocyte, or rarely ocyte, is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in the ovary during female gametogenesis. The female germ cells produce a primordial germ cell (PGC) which undergoes a mitotic division to form an oogonium. During oogenesis the oogonium becomes a primary oocyte (pronounced oh'a-site).
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