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| | Effects of Endocrine-disrupting Contaminants on Amphibian Oogenesis: Methoxychlor Inhibits Progesterone-induced ... |
 | | Environmental Health Perspectives (EHP) is a monthly journal of peer-reviewed research and news on the impact of the environment on human health. | | | Maturation in amphibia, which results in germinal vesicle breakdown (GVBD), spindle formation, and extrusion of the first polar body (28), is stimulated by progesterone (29). | | | This highlights the need for a broad-based and flexible approach to screening of environmental contaminants for endocrine-disrupting activity. |
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http://ehp.niehs.nih.gov/members/1999/107p285-292pickford/pickford-full.html
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| | Schupbach Lab People |
| | Pai, L.-M., Barcelo, G., and Schüpbach, T. D-cbl, a negative regulator of the Egfr pathway, is required for dorsoventral patterning in Drosophila oogenesis. | | | Mutations in Cct1 cause a ariety of defects including fused ovarioles, mispositioned oocytes, and a shortened operculum, suggesting that Cct1 plays roles in both ovarian morphogenesis and oogenesis in the adult. | | | Genetic and molecular analysis of oogenesis in Drosophila melanogaster |
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http://www.molbio.princeton.edu/labs/schupbach/people.htm
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| | University of Miami School of Medicine - Glossary - Oogenesis |
| | Oogenesis is in contrast to spermatogenesis, the process of sperm formation. | | | University of Miami School of Medicine - Glossary - Oogenesis | | | The second "o" in oogenesis is pronounced separately from the first: o·o·gen·e·sis. |
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http://www.med.miami.edu/glossary/art.asp?articlekey=20231
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| | Oogenesis |
| | Now the ovum is ready to fuse with the spermatozoan. | | | Why is it important that asymmetrical cytokinesis occurs in oogenesis? | | | Oogenesis occurs by meiosis as well, but with some modifications. |
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http://distance.stcc.edu/AandP/AP/AP2pages/reprod/oogenesi.htm
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| | Oogenesis: A collaborative effort |
| | Organization is critical: Components may be spatially restricted to facilitate establishment of distinct embryonic regions. | | | In some organisms, all stages of oogenesis can co-exist in the ovary (e.g. | | | The task of oogenesis is to construct a large cell containing a large and complex dowry of resources for construction of the embryo before it can either make them on its own or obtain them from its environment. |
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http://www.ucalgary.ca/UofC/eduweb/virtualembryo/oogen.html
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| | Fertilization: Oogenesis |
| | During oogenesis dramatic changes take place within the oocyte. | | | These include changes in the size, yolk content and distribution, meiotic state of the oocyte, as well as progressive changes in the distribution of maternally supplied mRNAs and proteins that are required for development following fertilization. | | | The morph sequence at the right illustrates the enormous changes in external appearance of the Xenopus oocyte as it progresses through oogenesis. |
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http://worms.zoology.wisc.edu/frogs/fert/fert_oogen.html
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| | Best Book Buys - Oogenesis Books |
| | Books > Browse > Subject Category > Science > Life Sciences / Human Anatomy & Physiology > Oogenesis | | | Subject Category > Science > Life Sciences / Human Anatomy & Physiology > Oogenesis | | | Grauzone and Completion of Meiosis During Drosophilia Oogenesis |
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http://www.bestwebbuys.com/Human_Anatomy_and_Physiology-N_10038703-books.html
(95 words)
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| | Oogenesis |
| | Oogenesis is the process of meiosis in female organisms from an oogonium to a primary oocyte, to a secondary oocyte, and then to an ovum. | | | Although both are important processes, we will focus on mammalian oogenesis in this project, because it directly relates to the processes of germ-line gene therapy. | | | Early hormone control helps the follicle to develop and forces oogenesis to occur in a cycle in a certain time period. |
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http://www.brown.edu/Courses/BI0032/gentherp/oogIC.html
(478 words)
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| | Drosophila tissue and organ development: Oogenesis and the oocyte |
| | Dorsal appendage morphogenesis in Drosophila oogenesis has been used as a model system for studying the relationship between patterning and morphogenesis. | | | A Balbiani body and the fusome mediate mitochondrial inheritance during oogenesis | | | Drosophila tissue and organ development: Oogenesis and the oocyte |
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http://www.sdbonline.org/fly/aimorph/oocyte.htm
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| | AllRefer.com - ovum : Animal Ova : Oogenesis (Cell Biology) - Encyclopedia |
| | Maturation also occurs in the formation of sperm (spermatogenesis), but in spermatogenesis, in contrast to oogenesis, all four of the cells formed by meiotic division are functional. | | | In this ovum all the yolk from the original cell is collected; the three other, yolkless, cells are called polar bodies and never develop further. | | | In oogenesis in animals only one of the four cells formed by meiotic division is functional. |
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http://reference.allrefer.com/encyclopedia/O/ovum-animal-ova.html
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| | Oogenesis, Gene Expression in Amphibians |
| | Messenger RNA production during oogenesis has been studied extensively by monitoring the accumulation of polyadenylated RNA. | | | Although they have been studied most intensively in amphibians, they are quite widespread in the animal kingdom. | | | The polyadenylation status of RNA made during oogenesis can change dynamically at later stages, and this has functional significance. |
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http://www.acs.ucalgary.ca/~browder/oogen2.html
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| | Gametogenesis II.--OOGENESIS |
| | Oogenesis is the process of forming egg cells in the ovary. | | | Oogonia arise from the germ cells that have migrated to the ovary. | | | 19.29 shows the stages of oogenesis from the primary oocyte to the growing follicle, the Graafian follicle, ovulation and corpus luteum. |
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http://www.msu.edu/~kopachik/zol320/website/notes/lec5.html
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| | Bardakci et al. - Article |
| | Since many patients with skin diseases and tourists visit the hot-spring for treatment and pleasure, there may be a requirement for the culture of this species as an aquarium fish and/or for conservation purposes. | | | Consequently, the process of oogenesis in both populations studied is similar in general but is under the stress of the high constant temperature and starvation in the hot-spring population. | | | The process of oogenesis has been divided to various stages according to size and various cell inclusions. |
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http://www.epress.com/w3jbio/vol5/bardakci/paper.htm
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| | Oogenesis -- Facts, Info, and Encyclopedia article |
| | There may be two polar bodies, in which case one is ((genetics) an organism or cell having two sets of chromosomes or twice the haploid number) diploid and did not undergo meiosis II. | | | Oogenesis refers to the process of formation, development, and maturation of a healthy (A female gametocyte that develops into an ovum after two meiotic divisions) oocyte (egg) in the ((vertebrates) one of usually two organs that produce ova and secrete estrogen and progesterone) ovary. | | | In (Any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk) mammals, oogonial transformation into oocytes is completed either before or shortly after birth. |
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http://www.absoluteastronomy.com/encyclopedia/o/oo/oogenesis.htm
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| | Interactive Fly, Drosophila |
| | From stage 2 until stage 7 of oogenesis, EGL mRNA is concentrated at the posterior cortex of the oocyte. | | | During stage 8 of oogenesis the microtubule network repolarizes and the microtubules orient from the anterior cortex (Theurkauf, 1992). | | | During stages 1-6 of oogenesis, a microtubule network extends from an MTOC located at the posterior cortex of the early oocyte into the nurse cells. |
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http://www.sdbonline.org/fly/cytoskel/bicauld1.htm
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| | Reproductive System / Female Reproductive System / Ovaries |
| | The other three cells are polar bodies and they degenerate. | | | Female sex cells, or gametes, develop in the ovaries by a form of meiosis called oogenesis. | | | In oogenesis, only one functional fertilizable cell develops from a primary oocyte. |
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http://training.seer.cancer.gov/module_anatomy/unit12_3_repdt_female1_ovaries.html
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| | oogenesis -- Encyclopædia Britannica |
| | Animals lack semirigid cell walls, and movement is effected through muscle and nerve cells. | | | They have sperm and form polar bodies in oogenesis. | | | In any one human generation, the egg's development starts before the female that carries it is even born; 8 to 20 weeks after the fetus has started to grow, cells that are to become mature ova have been multiplying, and by the time that the female is born, all of… |
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http://www.britannica.com/eb/article-9057157?tocId=9057157&query=null&ct=null
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| | Cooley Lab Research |
| | We are studying oogenesis in Drosophila, which has striking similarities to oogenesis in other animals. | | | Thus, our research uses a variety of approaches (genetics, cell biology, biochemistry) to study the regulation of nurse cell development. | | | Our primary interest is in determining the mechanism of intercellular cytoplasm transport during Drosophila oogenesis. |
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http://info.med.yale.edu/cooley/Research.html
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| | Science Day 2005 |
| | However, the precise roles that caspases play in this process have not yet been determined. | | | The first is observed sporadically during mid-oogenesis to rid the ovary of abnormal egg chambers, while the other takes place later in oogenesis to facilitate the development of the oocyte. | | | Previous studies have suggested a role for the initiator caspase dcp-1 in Drosophila oogenesis, specifically in proper nurse cell death and cytoplasmic transport. |
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http://www.bu.edu/phpbin/scienceday/judges/abstract.php?id=140
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| | Mosquito Genomics Server : anopheles oogenesis |
| | Search Pubmed with the words Anopheles and oogenesis and you will find some information on the subject. | | | The book "The biology of mosquitoes" (volume 1) by A.N.Clements also has information on this subject. | | | I 've been looking at the internet and all i've found found was nothing. |
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http://klab.agsci.colostate.edu/tikiwiki/tiki-view_forum_thread.php?forumId=3&comments_parentId=14
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| | The bottleneck: mitochondrial imperatives in oogenesis and ovarian follicular fate. |
| | The bottleneck: mitochondrial imperatives in oogenesis and ovarian follicular fate. | | | We argue that maintaining the integrity of mitochondrial inheritance is such a strong evolutionary imperative that we should expect at least some features of ovarian follicular formation, function and loss to be primarily adapted to this specific purpose. | | | We predict, moreover, that to prevent accumulation of mild mitochondrial genomes in the population there is a need for physiological female sterility prior to total depletion of ovarian oocytes, a phenomenon for which there is empirical evidence and which we term the oopause. |
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http://www.arclab.org/medlineupdates/abstract_9922103.html
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| | IR assignment |
| | define: spermatogenesis; define: Spermatogenesis; define: oogenesis; define: Oogenesis | | | The results here also suggest that capital and lower-case letters are treated the same, but in query 2 I found that not to be the case. | | | This is helpful for users who are not sure how to articulate their queries. |
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http://www.unc.edu/~araab/inls102/IRassignment.html
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| | FRS: Oogenesis Explained |
| | Oogenesis is the process by which the following occurs: | | | If fertilization is completed, the zygote undergoes several mitotic changes to become an embryo; otherwise it degenerates. | | | Female gametes leave the surface of the ovary |
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http://www.cvm.okstate.edu/instruction/mm_curr/histology/fr/hifrp05.htm
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| | Requirement for a Noncoding RNA in Drosophila Polar Granules for Germ Cell Establishment. |
| | Institute of Biological Sciences, Gene Experiment Center, and Center for Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba, Ibaraki 305, Japan. | | | Although Pgc is expressed in female germ cells throughout oogenesis, we did not observe any defect in oogenesis in females expressing antisense Pgc. | | | Early cell fate specification is regulated in many animal embryos by cytoplasmic determinants that are localized asymmetrically during oogenesis. |
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http://www.euchromatin.org/Nakamura1.htm
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| | Amazon.ca: Books: Oogenesis, Spermatogenesis, and Reproduction |
| | Look for books like Oogenesis, Spermatogenesis, and Reproduction by subject: | | | Use Your Account to view or change your orders | | | We will notify you within 2-3 weeks if we have trouble obtaining this title. |
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http://www.amazon.ca/exec/obidos/ASIN/3805552815
(118 words)
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| | Gametogenesis: process of differentiation that produces cells specialized for reproduction |
| | Oogonium becomes committed to proceed through oogenesis when it enters the S-phase of meiosis | | | Once an oogonium become committed to complete oogenesis it begins one of the most remarkable examples of growth of a single cell | | | Most of oogenesis is spent with the cell in the prophase of the first meiotic division |
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http://www.rci.rutgers.edu/~uzwiak/HumanSexuality/HSSpringLect4.html
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| | [No title] |
| | Recall that in normal oogenesis, three of these products would be a polar body and the fourth would become the egg cell. | | | This cell is known as a primary oocyte. | | | If nondisjunction of the sex chromosomes occurs during oogenesis, some egg cells will contain two X chromosomes and others will contain no X chromosomes. |
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http://www.br.cc.va.us/biology/lab/chromosomes/procedure.htm
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| | Soma-to-Germline Interactions During Drosophila Oogenesis Are Influenced by Dose-Sensitive Interactions Between cut and ... |
| | Soma-to-Germline Interactions During Drosophila Oogenesis Are Influenced by Dose-Sensitive Interactions Between cut and the Genes cappuccino, ovarian tumor and agnostic | | | observed only in middle to late stages of oogenesis, suggesting | | | Soma-to-Germline Interactions During Drosophila Oogenesis Are Influenced by Dose-Sensitive Interactions Between cut and the Genes cappuccino, ovarian tumor and agnostic -- Jackson and Berg 153 (1): 289 -- Genetics |
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http://www.genetics.org/cgi/content/abstract/153/1/289
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| | Gametogenesis - The Doctors Lounge(TM) |
| | Why the second X chromosome is reactivated is not clear, but failure to do so is severely deleterious to oogenesis. | | | In all mammals, motility probably serves to aid the sperm in passing through the cumulus and zona. | | | At this stage of oogenesis, the inactive X chromosome is reactivated. |
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http://www.thedoctorslounge.net/fertility/articles/gametogenesis
(1900 words)
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| | McLaren Group |
| | We found that expression of Peg3 occurred not only in XX but also in XY females, so in this situation it was the gonadal environment rather than the germ cell’s sex chromosome constitution that was the deciding factor. | | | We have extended this study to look at the imprinting of the paternally expressed gene Peg3 during oogenesis. |
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http://www.gurdon.cam.ac.uk/groups/mclaren.html
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| | Table of contents for Library of Congress control number 2001029437 |
| | DISCUSSION...........................................................................................53 4.1 Mutations in the grau alleles affect the coding region of the protein53 4.2 Regulation of Grau function during oogenesis and at later developmental stages.........................................................................54 4.3 Control of meiotic divisions..............................................................55 4.4 Translational control, meiosis, and early development....................57 5. | | | Table of contents for Grauzone and completion of meiosis during drosophila oogenesis / by Bin Chen. | | | Library of Congress subject headings for this publication: Zinc-finger proteins, Meiosis, Drosophila, Oogenesis, Meiosis genetics, Drosophila cytology, Oogenesis physiology, Zinc Fingers genetics |
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http://www.loc.gov/catdir/toc/fy031/2001029437.html
(349 words)
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| | [No title] |
| | In these experiments, only the number of offspring responded to maternal nutritional status, but in some species of reptiles the size and viability of the offspring might be affected. | | | That is, females that were well fed during oogenesis produced larger litters than did females that received less food. | | | In laboratory studies of viviparous and oviparous snakes the ratio of clutch mass (eggs or embryos) to female body mass remained constant under different feeding regimes, with the result that absolute reproductive effort (grams of offspring per female) was proportional to energy intake (Ford and Siegel, 1989; 1991). |
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http://netvet.wustl.edu/species/AMPHIB/POUGH.TXT
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| | Definition of oogenesis - Merriam-Webster Online Dictionary |
| | For More Information on "oogenesis" go to Britannica.com | | | Get the Top 10 Search Results for "oogenesis" | | | Now you can take the Eleventh Edition with you anywhere as Franklin's new Speaking Electronic Handheld! |
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http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=oogenesis
(71 words)
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| | [No title] |
| | stage S3-S10 EPAnurse cell EPTadult, oogenesis EPAgermarium region 2b } } } } # EOR GENR { IDFBgn0000182 PTR { PPR { IDFBpp0001803 SYMBicC-P1 AAL938 PSZ102 | | | stage S3-S10 EPAnurse cell EPTadult, oogenesis EPAgermarium region 2b } } TRR { IDFBtr0006647 SYMbic-RB TRL1.7 (northern blot) EPAT { EPTembryo EPTembryo | | | 0-2.5 hr EPTadult, oogenesis EPAovary } TRL2.8 (length of longest cDNA) EPAT { EPTembryo |
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http://cricket.bio.indiana.edu:7081/genes/FBgn.expat.acode
(15268 words)
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| | [No title] |
| | Ultrastructure of the ovary and oogenesis in six species of patellid limpets (Gastropoda: Patellogastropoda) from South Africa. | | | Gonadal morphology and gametogenesis in the sea pen Pennatula aculeata (Anthozoa: Pennatulacea) from the Gulf of Maine. |
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http://server.dmc.maine.edu/publications.html
(2799 words)
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