• Ovaries , in females, which produce eggs by oogenesis , which is the development of oogonium into ovum . (mrshum.com)
  • The conclusions were the same when the germ cells present in human fetal ovaries were studied. (inserm.fr)
  • In order to investigate whether exposure to nZnO during embryonic development affects ovary development, 12.5 day post coitum (dpc) fetal mouse ovaries were cultured in the presence of nZnO for 6 days. (scite.ai)
  • In mammals , the first part of oogenesis starts in the germinal epithelium , which gives rise to the development of ovarian follicles , the functional unit of the ovary . (wikipedia.org)
  • The Oocyte Mosaicism Selection theory [6] suggests that "the incidence of trisomy 21 mosaicism in a cohort of normal fetal ovarian samples, indicating that an accumulation of trisomy 21 germ cells does indeed take place during fetal oogenesis, i.e., from the first to the second trimester of pregnancy. (edu.au)
  • The process of oogenesis is described by the ovarian cycle, which is involved in the formation and maturation of female gamete. (microbenotes.com)
  • Presently, as all researches and efforts are focusing on the increasing success rate of infertility treatments, studies that precisely measure effects of air quality on different stages of reproduction including fetal period, gonadal development and maturation in both sexes, ovarian stimulation cycles, in vitro embryo culture and pregnancy, evaluation of the impact of each pollutant on above stages and methods to reduce or eliminate them are highly recommended. (jri.ir)
  • An immature ovum is a cell that goes through the process of oogenesis to become an ovum. (wikipedia.org)
  • In oogenesis, it doesn't really have any significance in itself, since it is very similar to the ovum. (wikipedia.org)
  • oocytogenesis , ootidogenesis , and finally maturation to form an ovum (oogenesis proper). (wikipedia.org)
  • Oogenesis is the process of formation of female gamete or ovum through a series of mitotic and meiotic divisions occurring in the female reproductive system. (microbenotes.com)
  • Cigarette smoking is a good example in both men and women as it can harm oogenesis, spermatogenesis, sperm and ovum quality leading to intrauterine growth retardation and increased risk of abortion (2). (jri.ir)
  • Oogenesis is the process of formation of ova or eggs in the ovary of a fem ale. (studypool.com)
  • The process of oogenesis only continues till menopause after which the ovary ceases to form primary oocytes. (microbenotes.com)
  • In summary, our results indicate that JAK signaling contributes to germline cyst breakdown and primordial follicle formation by regulating oocyte loss and pregranulosa cell proliferation in the fetal mouse ovary. (appliedbioinfo.com)
  • The secondary oocyte is the cell that is formed by meiosis I in oogenesis. (wikipedia.org)
  • For example, in the mouse, NANOS2 plays a role in meiosis suppression by preventing Stra8 expression in male foetal gonads 4 . (nature.com)
  • 6 - Reproductive system (general functions of the male reproductive system, parts of the male reproductive system, process of meiosis, process of spermatogenesis, male hormones, female reproductive system, parts of the female reproductive system, process of oogenesis, female hormones). (cvut.cz)
  • Oogenesis is initiated in the embryonic stage. (wikipedia.org)
  • Scientists use cerebral organoids, which are artificially produced miniature organs that represent embryonic or fetal brains and have many properties similar to them, to help them study developmental disorders like microcephaly. (asu.edu)
  • Dates reduce the oxidative effects on oogenesis and embryonic microenvironment. (drbrahma.com)
  • The creation of oogonia traditionally doesn't belong to oogenesis proper, but, instead, to the common process of gametogenesis , which, in the female human, begins with the processes of folliculogenesis , oocytogenesis, and ootidogenesis . (wikipedia.org)
  • Introduction Oogenesis is the female version of gametogenesis and is therefore the female equivalent of spermatogenesis. (vetsci.co.uk)
  • Via genetic and chemical models, the team was able to propose that the deleterious effects of bisphenols on mature oocytes results from their ability to induce oxidative lesions on DNA at a key step in germinal cell differentiation during the fetal period. (cea.fr)
  • Forbes v. Napolitano (2000) was a US court case that established that Arizona researchers could use fetal tissues from induced abortions for basic scientific research, for instance, as a source of stem cells. (asu.edu)
  • The case challenged the constitutionality of the Arizona Revised Statute (ARS) 36-2303 in the Ninth Circuit US Court of Appeals, a law that banned researchers from using fetal tissues from abortions for any type of medical experimentation or investigation. (asu.edu)
  • Advanced maternal age and risk of non-chromosomal anomalies: data from a tertiary referral hospital in Turkey [8] "The purpose of this study is to determine if there is a relationship between non-chromosomal fetal anomalies of various organ systems and advanced maternal age. (edu.au)
  • James M Cummins published 'The Role of Maternal Mitochondria during Oogenesis, Fertilization and Embryogenesis' 30 January 2002 in Reproductive BioMedicine Online. (asu.edu)
  • In its study performed in a mouse model and published in Environmental Pollution , the team showed that fetal exposure to environmental concentrations of BADGE or BPAF caused oocyte defects in mature mice comparable to those provoked by fetal BPA exposure . (cea.fr)
  • Interestingly, most of these pollutants may be inactivated by the pregnant mother's physiological systems to effectively minimize fetal exposure to them. (jri.ir)
  • It was the first to be shown to alter oogenesis and lead to the formation of oocytes with an abnormal number of chromosomes (aneuploidy), in turn responsible for numerous miscarriages and fertility disorders. (cea.fr)
  • There was no statistically significant difference between the two groups with different menstrual periods for mode of delivery, ectopic pregnancy, early miscarriage, late miscarriage, week of gestation of delivery, fetal weight and fetal length in patients after fresh embryo transfer with antagonist regimen. (researchsquare.com)
  • However, to recapitulate mammalian oogenesis and produce fertilizable oocytes in vitro is a complex process involving several different cell types, precise follicular cell-oocyte reciprocal interactions, a variety of nutrients and combinations of cytokines, and precise growth factors and hormones depending on the developmental stage. (edu.au)
  • Methotrexate has been reported to cause fetal death and/or congenital anomalies. (nih.gov)
  • Fluorouracil may cause fetal harm when administered to a pregnant woman. (nih.gov)
  • You should've studied that: initially there are many follicle ( primary follicles) which are selected for oogenesis. (stackexchange.com)
  • James M Cummins published 'The Role of Maternal Mitochondria during Oogenesis, Fertilization and Embryogenesis' 30 January 2002 in Reproductive BioMedicine Online. (asu.edu)
  • [ 3 ] Natural history of TS is oogenesis abnormalities and accelerated foetal germ cells apoptosis. (medscape.com)
  • In mouse fetal testes, the majority of germ cell apoptosis coincides with the onset of male differentiation, suggesting coordination of these processes. (nih.gov)
  • We studied fetal germ-cell fates and discovered that both apoptosis and differentiation initiate in clonally related clusters. (nih.gov)
  • Complete in vitro oogenesis: retrospects and prospects [3] "In reality the vast majority of oocytes formed from primordial germ cells (PGCs) will undergo apoptosis, or other forms of cell death. (edu.au)
  • What is the fetal part of the placenta derived from? (freezingblue.com)
  • Signals from foetus & placenta → mild uterine contractions (fetal ejection reflex) → oxytocin from pituitary → stronger uterine muscle contractions → further secretion of oxytocin → Parturition (giving birth). (bankofbiology.com)
  • Polar bodies are not just mere discarded material in oogenesis as recent experiments have determined its key role in leading to stable embryo development. (stackexchange.com)
  • Recent progress in our knowledge of signaling pathways and their environmental and hormonal control during adult and fetal life opens new perspectives to improve the management of the ovarian reserves. (bioone.org)
  • By the fifth month of fetal development of a human female, the ovaries contain several million oogonia (o-o-go-ne-ah), the stem cells of the ovaries. (earthslab.com)
  • In females, the reproductive system includes the ovaries, which produce eggs, and the uterus, which is used for fetal development during pregnancy. (w8md.com)
  • Fetal Development: Fetal development begins after the embryo is fully implanted in the uterus and involves the growth and development of the fetus. (w8md.com)
  • Dr. Jagiello's search for the causes of Down syndrome led not only to the development of this technique, but also to an increased understanding of environmental factors and chemical exposure on fetal development. (nih.gov)
  • Tissue interactions and estrogenic response during human female fetal reproductive tract development. (docslib.org)
  • 2. Interaction between DMRT1 function and genetic background modulates signaling and pluripotency to control tumor susceptibility in the fetal germ line. (nih.gov)
  • The Fetal Origins of Health and Disease (FOHaD) hypothesis postulates that adult diseases such as cardiovascular disease, type 2 diabetes, and obesity can originate in fetal life and that their beginnings are influenced by developmental plasticity, i.e., the ability of the fetus to respond to the mother's diet in utero. (nih.gov)
  • Mastering A&P assignments support interactive features in the lab manual and include new Pre-Lab Video coaching activities, new Cat Dissection Video and Fetal Pig Dissection Video coaching activities, new fully mobile PAL 3.1 plus PAL 3.1 Customizable Flashcards, Learning Catalytics ™ , A&P Flix 3D muscle animations, a variety of Art Labeling Questions, Clinical Application Questions, and more. (ecampus.com)
  • His research integrates issues of Meiotic entry, Chromosome 21 and Fetus, Human fetal in his study of Trisomy. (research.com)
  • His Aneuploidy study which covers Oogenesis that intersects with Andrology. (research.com)