Academic literature on the topic 'Oogenesis and ovum'

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Journal articles on the topic "Oogenesis and ovum"

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Rybska, Marta, Sandra Knap, Maurycy Jankowski, et al. "Cytoplasmic and nuclear maturation of oocytes in mammals – living in the shadow of cells developmental capability." Medical Journal of Cell Biology 6, no. 1 (2018): 13–17. http://dx.doi.org/10.2478/acb-2018-0003.

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AbstractThe pig is a polyestrous animal in which the ovarian cycle lasts about 21 days and results in ovulation of 10-25 oocytes. Ovum reaches 120-150 μm in diameter, with the surrounding corona radiata providing communication with the environment. The zona pellucida is composed of glycoproteins: ZP1, ZP2, ZP3. In the course of oogenesis, RNA and protein accumulation for embryonic development occurs. Maternal mRNA is the template for protein production. Nuclear, cytoplasmic and genomic maturity condition the ability of the ovum to undergo fertilization. There are several differences in protein
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Stepińska, Urszula, and Bozenna Olszańska. "Detection of deoxyribonuclease I and II activities in Japanese quail oocytes." Zygote 9, no. 1 (2001): 1–7. http://dx.doi.org/10.1017/s0967199401001010.

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Birds exhibit physiological polyspermy, i.e. numerous spermatozoa enter the germinal disc of an oocyte and form pronuclei during fertilisation. However, only one of them unites with the female pronucleus to form a zygote nucleus; the supernumerary spermatozoal nuclei degenerate at the early cleavage stages. To establish a factor responsible for spermatozoal degeneration, the presence of DNase activity was studied in vitro in extracts of Japanese quail oocytes using λ DNA/HindIII as a substrate. The experimental conditions were designed to reveal the presence of either DNase I or DNase II activ
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Chermuła, Błażej, Maciej Brązert, Dariusz Iżycki, et al. "New Gene Markers of Angiogenesis and Blood Vessels Development in Porcine Ovarian Granulosa Cells during Short-Term Primary Culture In Vitro." BioMed Research International 2019 (January 30, 2019): 1–12. http://dx.doi.org/10.1155/2019/6545210.

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The physiological processes that drive the development of ovarian follicle, as well as the process of oogenesis, are quite well known. Granulosa cells are major players in this occurrence, being the somatic element of the female gamete development. They participate directly in the processes of oogenesis, building the cumulus-oocyte complex surrounding the ovum. In addition to that, they have a further impact on the reproductive processes, being a place of steroid sex hormone synthesis and secretion. It is known that the follicle development creates a major need for angiogenesis and blood vesse
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Matthiesen, M., H. D. Reichenbach, F. A. Habermann, M. Reichenbach, G. J. Arnold, and E. Wolf. "268 INFLUENCE OF DONOR AGE ON DEVELOPMENTAL COMPETENCE OF IN VITRO v. IN VIVO MATURED BOVINE OOCYTES OBTAINED BY REPEATED OVUM PICKUP FROM FOLLICLE-STIMULATING-HORMONE-STIMULATED AND NONSTIMULATED ANIMALS." Reproduction, Fertility and Development 23, no. 1 (2011): 232. http://dx.doi.org/10.1071/rdv23n1ab268.

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Recent findings on oogenesis, folliculogenesis, and ovarian aging in cows make the bovine system an attractive model for elucidating ovarian function and dysfunction as well as reproductive aging in women. The aim of the present study was to investigate the influence of donor age on the developmental competence of in vitro v. in vivo matured bovine cumulus–oocyte complexes (COC) obtained by ultrasound-guided repeated ovum pickup (OPU). Two groups (G1 and G2) of German Simmental heifers (14 months old at the beginning of the experiment, n = 5 and n = 7), first-lactation young cows (2–4 y old, n
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Egonmwan, RL. "An ultrastructural study of oogenesis in ARCHACHATINA MARGINATA OVUM (PFEIFFER) (PULMONATA: ACHATINIDAE)." Zoologist (The) 4, no. 1 (2009). http://dx.doi.org/10.4314/tzool.v4i1.45201.

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Dissertations / Theses on the topic "Oogenesis and ovum"

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Fazio, Cynthia Marie. "The influence of meiotic onset on and the role of apoptosis in oocyte death during the meiotic prophase /." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=97951.

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Loss of germ cells that entered meiosis at different developmental stages was compared. Mice were injected with BrdU at 13.3, 14.3 or 15.3 days post coitum (dpc) and sacrificed either 3 days after BrdU injection or 4 days post partum (dpp). BrdU-labeled germ cells were detected in ovarian sections through double immunofluorescent staining for BrdU and either GCNA-1 or MVH as a germ cell marker. The results show that the loss of germ cells that entered meiosis at 13.3 or 15.3 dpc was excessive compared to the loss of total germ cells. Such preferential elimination was not found for germ cells t
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Alton, Michelle. "Control of the oocyte population in mouse ovaries." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81585.

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Oocyte loss and meiotic prophase progression was studied in XY sex-reversed and XO female mice, two mouse models that lack pairing between their sex chromosomes. An arrest at the pachytene stage of meiosis was not observed, nor was a significant loss of oocytes at this stage compared to normal XX control mice. Thus, it was concluded that a pairing checkpoint either does not exist in oocytes or is not as stringent as the one observed in males.<br>The effect of mutating the pro-apoptotic Bax molecule was studied at three distinct ages corresponding to the time when female germ cells are p
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Moon, Yeoncheol. "A study of piezo-drill vibration for intracytoplasmic sperm injection /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1420943.

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Snow, Alan J. "Phosphorylation-dependent interaction of tyrosine 3 monooxygenase/tryptophan 5-monooxygenase activation protein (14-3-3) with PADI6 following oocyte maturation in mice." [Kent, Ohio] : Kent State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=kent1208796428.

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Thesis (Ph.D.)--Kent State University, 2008.<br>Title from PDF t.p. (viewed May 26, 2009). Advisor: Douglas W. Kline. Keywords: oocyte, egg, ovum, PADI6, PAD6, 14-3-3, peptidylarginine deiminase, phosphorylation, mouse, oocyte maturation, gamete biology. Includes bibliographical references (p. 91-97).
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Books on the topic "Oogenesis and ovum"

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Guraya, Sardul S. Cellular and molecular biology of human oogenesis, ovulation and early embryogenesis: Fundamentals, biomedical and clinical implications in relation to infant disorder. New Age International (P) Ltd., Publishers, 2008.

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Homer, Hayden A. Mammalian oocyte regulation: Methods and protocols. Humana Press, 2013.

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Atlas of the human oocyte and early conceptus. Williams & Wilkins, 1986.

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Veeck, Lucinda L. Atlas of the humanoocyte and early conceptus. Williams & Wilkins, 1986.

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Veeck, Lucinda L. Atlas of the Human Oocyte & Early Conceptus. Williams & Wilkins, 1991.

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An atlas of the ultrastructure of human oocytes. Pathenon Pub. Group, 2000.

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El, Shafie Mahmoud, ed. An atlas of the ultrastructure of human oocytes: A guide for assisted reproduction : [an illustrated textbook amd reference for clinicians]. Parthenon, 2000.

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8

Shafie, M. El, Mario Sousa, and Thunus F. Kruger. An Atlas of the Ultrastructure of Human Oocytes: A Guide for Assisted Reproduction (The Encyclopedia of Visual Medicine Series). Informa Healthcare, 2000.

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