Embryonic Vesicle
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Uso da ultra-sonografia modo B no diagnóstico de gestação em matrizes suínas.
Com este trabalho objetivou-se determinar o efeito da idade gestacional e da ordem de parto das fêmeas suínas examinadas, no período de 18 a 22 dias pós-inseminação artificial, sobre o momento da visualização tanto da vesícula embrionária como do embrião; o tamanho das vesículas e dos embriões; a acurácia, sensibilidade e especificidade do diag
Publicado em: 2008
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2. Desenvolvimento embriológico e fetal em pacas (Agouti paca, Linnaeus 1766): estabelecimento de modelo experimental análogo murino para detecção de linhagens "Germ Cells" / Development of embryonic and fetal of pacas (Agouti paca, Linnaeus 1766): establishment of experimental model analogous to murine "Germ cells" linage detection
The study aimed elucidates the development of embryonic and fetal of pacas (Agouti paca) and demarcation of the germ sites in embryos at different stages. Seven specimens were used; two embryos and three fetuses from UNESP- Jaboticabal and other two fetuses were from FMVZ-USP collection. The fetuses 1 and 2 showed immaturity facial sharp, eyes covered by a l
Publicado em: 2007
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3. A prostata ventral do gerbilo frente as diferentes formas de castração e subsequente reposição hormonal pela testosterona
The prostate is an exocrine gland of the male genital system, which secretes part of seminal liquidolts differentiation initiates in the beginning of the embryonic development and finishes during the puberty. Testosterone (T) plays an essential role in prostate maintenance, after transformation, by 5a-reductase enzyme, to dehidrotestostorone (DHT) an more po
Publicado em: 2005
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4. EXPRESSÃO DE ANEXINA II EM OÓCITOS E NO DESENVOLVIMENTO EMBRIONÁRIO BOVINO / ANNEXIN II GENE EXPRESSION IN BOVINE OOCYTES AND EMBRIONIC DEVELOPMENT
The present study as conducted to examine semiquantitative gene expression of annexin II (ANEII) during all follicular phases of folliculogenesis in bovine, in preantral follicles and oocytes of antral follicles too in different size (<3mm, 5-8mm e >9mm in diameter). It was investigated the gene expression of ANEII influenced by retinol during oocyte maturat
Publicado em: 2004
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5. Ultrasound-guided intra-uterine injection technique for embryo transfer in mares / Técnica ultra-sonográfica de injeção intra-uterina para transferência de embriões em eqüinos
Embryo transfer (ET) in mares has been performed by transcervical or surgical methods. Pregnancy rates resulting from the transcervical method are more variable; however this is the more routine ET technique used nowadays. The surgical method has resulted in higher and less variable pregnancy rates. Although, this technique is much more invasive than the tra
Publicado em: 2003
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6. The optic vesicle promotes cornea to lens transdifferentiation in larval Xenopus laevis
The outer cornea and pericorneal epidermis (lentogenic area) of larval Xenopus laevis are the only epidermal regions competent to regenerate a lens under the influence of the retinal inducer. However, the head epidermis of the lentogenic area can acquire the lens-regenerating competence following transplantation of an eye beneath it. In this paper we demonst
Blackwell Science Inc.
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7. Evolutionary conservation of key structures and binding functions of neural cell adhesion molecules.
The neural cell adhesion molecule N-CAM is a sialic acid-rich, cell surface glycoprotein that mediates cell adhesion by a homophilic mechanism. Its binding function has been implicated in both morphogenesis and histogenesis; during development it changes in amount at the cell surface and perinatally it undergoes a decrease in sialic acid content (embryonic--
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8. BMP4 is essential for lens induction in the mouse embryo
Vertebrate lens development is a classical model system for studying embryonic tissue interactions. Little is known, however, about the molecules mediating such inductive events. Here, we show that Bmp4, which is expressed strongly in the optic vesicle and weakly in the surrounding mesenchyme and surface ectoderm, has crucial roles during lens induction. In
Cold Spring Harbor Laboratory Press.
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9. Ultrastructural evidence of a vesicle-mediated mode of cell degranulation in chicken chromaffin cells during the late phase of embryonic development
In the present investigation, we attempted to determine whether ultrastructural features indicative of a vesicle-mediated mode of cell secretion were detectable in chick chromaffin cells during embryo development. The adrenal anlagen of domestic fowls were examined at embryonic days (E) 12, 15, 19 and 21 by electron microscopy quantitative analysis. Morphome
Blackwell Science Inc.
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10. A Mutation in SNAP29, Coding for a SNARE Protein Involved in Intracellular Trafficking, Causes a Novel Neurocutaneous Syndrome Characterized by Cerebral Dysgenesis, Neuropathy, Ichthyosis, and Palmoplantar Keratoderma
Neurocutaneous syndromes represent a vast, largely heterogeneous group of disorders characterized by neurological and dermatological manifestations, reflecting the common embryonic origin of epidermal and neural tissues. In the present report, we describe a novel neurocutaneous syndrome characterized by cerebral dysgenesis, neuropathy, ichthyosis, and kerato
The American Society of Human Genetics.
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11. A forkhead gene, FoxE3, is essential for lens epithelial proliferation and closure of the lens vesicle
In the mouse mutant dysgenetic lens (dyl) the lens vesicle fails to separate from the ectoderm, causing a fusion between the lens and the cornea. Lack of a proliferating anterior lens epithelium leads to absence of secondary lens fibers and a dysplastic, cataractic lens. We report the cloning of a gene, FoxE3, encoding a forkhead/winged helix transcription f
Cold Spring Harbor Laboratory Press.
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12. Quantitation of delta-crystallin messenger RNA during lens induction in chick embryos.
Embryonic chick cells of the presumptive lens ectoderm are induced to differentiate into a lens by the optic vesicle, an outgrowth from the developing brain. This lens induction involves formation of the lens placode by cell elongation between about 44 and 50 hr of development, followed by invagination of the placode between about 50 and 55 hr of development