| 词汇 | example_english_germ-cell |
| 释义 | Examples of germ cellThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. A two-tiered transcription regulation mechanism that protects germcell identity. It too, however, may be generating a background level of random epigenetic mutations in each germcell generation. The stages during germcell differentiation, fertilisation and embryonic development during which erasure, establishment and maintenance of imprinting occur are shown. It was concluded that both genic factors and pairing problems are involved in promoting germcell death and nondisjunction. Two germcell lineages with genomes of different species in one and the same animal. In our study, the use of a pool of spermatogenic cells rather than a purified germcell population might not be ideal. Apoptosis-associated signaling pathways are required for chemotherapy-mediated germcell destruction. At what stage is germcell apoptosis maximum? From animal studies, pro-apoptotic caspases (-2 and -3) have been implicated in the pathways of germcell apoptosis. The methylation sites that survive are part of the imprinting process, passing maternal and paternal information to the final germcell populations. More rounded outline as compared with the primordial germcell. Apoptosis-associated signalling pathways are required for chemotherapy-mediated female germcell destruction. Restoration of fertility by germcell transplantation requires effective recipient preparation. Stage-specific tissue and cell interactions play key roles in mouse germcell specification. Due to the post-spermatogonial germcell specificity of ifosfamide, the genetic risk is limited to a few weeks after exposure. Clinical trials have since established cisplatin in lung, ovarian, esophageal, cervical, head and neck and germcell cancers. This may become reality sooner than anticipated thanks to rapid progress in the germcell culture technique. This technique allows germcell separation according to their respective sizes. Evidence that the mechanism of prenatal germcell death in the mouse is apoptosis. It is possible that cumulus cells compete with the oocyte for pyruvate and other beneficial medium components and impede their availability to the germcell. At this stage germcell production reaches its maximum rate. The main problem to solve in the next step is to improve the conditions of germcell isolation and culture. Imprinting and the initiation of gene silencing in the germcell. We present the germcell of the philosophy driving the modeling framework below. The extra signals could represent either trisomy (which would have arisen during germcell mitosis) or prematurely separated sister chromatids. Such damage could affect the organism's life trajectory, but would be erased at the next generation's germcell formation. Before entering meiosis, the germcell has undergone many mitotic divisions; each of these is at risk of chromosomal error. Male germcell apoptosis is indicated by brown colouration or green colour. A description of spermiogenesis in the mouse and its use in analysis of the cell cycle of the seminiferous epithelium and germcell renewal. Identification, cloning, and initial characterization of a novel mouse testicular germcell-specific antigen. Ovarian development: the functional importance of germcell interconnections. Requirement for phosphatidylinositol-3'-kinase in cytokine-mediated germcell survival during fetal oogenesis in the mouse. Based on data obtained from molecular biological as well as immuno-morphological studies, we believe this molecule may play a role in the process underlying germcell formation. Natural history of the female germcell from its origin to full maturation through prenatal ovarian development. A mutant gene will occur in a germcell and then be transmitted for many generations in carriers before it meets a similar mutant gene in an affected child. Requirements for mast cell growth factor for primordial germcell survival in culture. A description of spermiogenesis in the mouse and its use in analysis of the cycle of the seminiferous epithelium and germcell renewal. Cellular and molecular aspects of mouse primordial germcell migration and proliferation in culture. The importance of this type of exposure is that a defect could propagate through all cells of an ensuing organism derived from an altered germcell. Interaction of divalent cations with germcell specific sulfogalactosylglycerolipid and the effect on lipid chain dynamics. Embryonic germcell lines and their derivation from mouse primordial germ cells. In some 95% of instances the third chromosome 21 is free (regular trisomy) and the anomaly is assumed to arise by non-disjunction at germcell formation. This is a grandmother effect, with exposure occurring at the time of germcell formation of the affected cohorts within the foetal growth stage of the parents. It clearly states that the germcell therapy of humans is unpatentable. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The technique itself must also be rejected, since research into modification of the germcell line requires embryo research in which embryos are consumed on a massive scale. From Europarl Parallel Corpus - English The shell valves then open along the suture line and the binucleate germcell penetrates between the intestinal epithelial cells of the worm. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is expressed in embryonal carcinoma but not in seminoma and is thus a useful marker in distinguishing between these germcell tumors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The treatment for mediastinal nonseminomatous germcell tumors should follow guidelines for poor-prognosis testicular cancer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Germcell tumors can be cancerous or non-cancerous tumors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is not a teratoma, however, which is a neoplasm comprising all three germcell layers (ectoderm, endoderm, mesoderm). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sacrococcygeal teratomas are the most common type of germcell tumors (both benign and malignant) diagnosed in neonates, infants, and children younger than 4 years. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A fourth type exists and is germcell specific. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In general, all patients with malignant germcell tumors will have the same staging surgery that is done for epithelial ovarian cancer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For men with risk factors for testicular germcell tumor such as subfertility however, individualized discussion with their urologists is necessary. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Teratomas of embryonic origin are congenital; teratomas of germcell origin may or may not be congenital (this is not known). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Identification of a candidate c-mos repressor that restricts transcription of germcell-specific genes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Atypical teratoid/rhaboid tumor closely resembles medulloblastoma, primitive neuroectodermal tumor, choroid plexus carcinoma, and some kinds of germcell tumor. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These include leukemias, most lymphomas and germcell tumors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These primordial germcell-like cells were then used to create spermatozoa and oocytes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Masses in the anterior portion of the mediastinum can include thymoma, lymphoma, pheochromocytoma, germcell tumors including teratoma, thyroid tissue, and parathyroid lesions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There is also evidence that telomerase activity is increased in tissues, such as germcell lines, that are self-renewing. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Most patients with germcell cancer will need to be treated with combination chemotherapy for at least 3 cycles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Germcell tumors, including teratoma, make up just 3% of pediatric primary brain tumors, but the worldwide incidence varies significantly. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Germcell tumors tend to occur in young women (20's-30's) and girls. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. About 1% of lung cancers are sarcomas, germcell tumors, and hematopoietic tumors, while 99% of lung cancers are carcinoma. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Additionally, whether the presence of testicular microlithiasis should influence decision for adjuvant chemotherapy or surveillance in individuals with testicular germcell tumor remains unclear. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Teratocarcinoma refers to a germcell tumor that is a mixture of teratoma with embryonal carcinoma, or with choriocarcinoma, or with both. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In neonates, infants, and children younger than 4 years, the majority of germcell tumors are sacrococcygeal teratomas. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One example of an oncofetal antigen is alpha-fetoprotein, which is produced by hepatocellular carcinoma and some germcell tumors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Stages in the cell cycle and germcell development. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The adjacent testicular tissue commonly shows intratubular germcell neoplasia, and may also show variable spermatocytic maturation arrest. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Germinomas lack histologic differentiation, whereas nongerminomatous germcell tumors display a variety of differentiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hook1 function is necessary for the correct positioning of microtubular structures within the haploid germcell. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its expression pattern suggests that it may be involved in neurogenesis and germcell development. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Testicular microlithiasis is not associated with risk of testicular cancer in asymptomatic individuals with no risk factors for testicular germcell tumor. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is thought that these germcell might be necessary for the upkeep of the reproductive follicles and oocyte development, well into adulthood. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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