997 resultados para Cél·lules mare embrionàries


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Resumen del vídeo en catalán

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La Dirección General de Enseñanza Media organiza viajes de estudios por el extranjero desde 1962, con el fin de potenciar el conocimiento de otros sistemas educativos entre profesionales de la enseñanza media españoles. En el año 1967 el viaje proyectado se tituló Mare Nostrum, y tenía previsto visitar Egipto, Tierra Santa y Grecia. Pero el estallido del conflicto entre árabes y judíos conllevó la suspensión de la visita a Egipto y algunos de los países árabes, excepto Tierra Santa y Turquía. Se describe la ruta seguida, la rutina diaria, con las actividades realizadas, como conciertos, fiestas, conferencias culturales, visitas a bibliotecas etc. También se describen los lugares visitados, como el puerto de Haifa, Tierra Santa, Turquía y Grecia, y el regreso a Barcelona. Se trata de la descripción de un viaje y de los lugares visitados, y no hay referencias a los sistemas educativos de los países visitados.

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Memoria de máster (Universidad Antonio de Nebrija, 2010). Incluye anexos. Resumen basado en el de la publicación

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El Ministeri licita les obres per restaurar la capella i condicionar-la com a espai polivalent de la Universitat de Girona. Les obres tenen un pressupost base de licitació d'1.004.943 euros. La construcció barroca té un alt valor arquitectònic.

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En aquest treball s'han desenvolupat dos mètodes simples i ràpids pel cultiu de les cèl·lules epitelials de les tres regions de l'epidídim de Sus domesticus. Un es basa en el cultiu de fragments del túbul epididimari intactes durant 8 dies. L'altre mètode es basa en el cultiu de fragments del túbul epididimari digerits amb col·lagenasa que, després de 7 dies, donen lloc a la formació d'una monocapa de cèl·lules epitelials epididimàries que adquireixen el 90-100% de confluència després de 12-16 dies en cultiu. Aquestes cèl·lules es mantenen viables durant més de 60 dies en cultiu i no s'observa proliferació de cèl·lules no epitelials. Per determinar el nivell de conservació de les característiques epididimàries en els cultius s'ha analitzat l'estructura cel·lular, l'activitat de síntesi i secreció proteica, i el manteniment i maduració dels espermatozoides en cocultiu.

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Uppsatsen analyserar Mare Kandres skildring av moderskapet i romanen Quinnan och Dr Dreuf samt i den åttonde novellen ur samlingen Hetta och vitt. I Quinnan och Dr Dreuf försöker Dr Dreuf påverka en kvinna till att vilja bli mor. Han motiverar detta med att hon då kommer att bli lycklig. I novellen ur Hetta och vitt beskrivs en kvinna som gjort just detta, skaffat sig barn, men som på grund av detta är djupt olycklig. Jag har kommit fram till att kvinnor i vårt samhälle, liksom kvinnan i Quinnan och Dr Dreuf, utsätts för påverkan från många håll när det gäller synen på moderskapet. Bland annat påverkas de genom folk i deras omgivning, av media och av litteraturen. Vanligtvis glorifieras och förenklas skildringen av moderskapet men Kandre avviker från detta. Hon sätter fingret på flera tabun och problematiserar moderskapet. I både novellen ur Hetta och vitt och i Quinnan och Dr Dreuf, ifrågasätts moderkärleken och novellen beskriver en kvinna som känner så pass mycket ilska gentemot sitt barn att hon måste motstå en impuls att knuffa in barnet hårt i väggen.

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Mummification occurs when the fetus dies during the second or third trimester of gestation and remains in the uterine cavity because of the persistence of the corpus luteum or existence of another live fetus. Generally, the mummified fetus and fetal membranes undergo desiccation. The hematic process is similar, but the fetus appears like melted chocolate and becomes lodged between the uterus and chorion. This report describes the treatment of dystocia in a mare with twin pregnancy, with one fetus having undergone hematic mummification. Although difficult to diagnose, the possibility of a second fetus should be investigated in mares with dystocia. (C) 2012 Elsevier B.V. All rights reserved.

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An 18-year-old Quarter Horse mare presented with an 18 week history of dermatological lesions characterised by recurrent urticaria and recent signs of enlarged mammary glands, pyrexia, alopecia and intense pruritus. Haematological and serum biochemical analyses revealed anaemia, leucocytosis, thrombocytopenia and hyperfibrinogenaemia. Mammary discharge was evaluated and revealed neutrophilia. Cytological examinations of fine needle aspirates from the parotid lymph nodes were normal. Common causes of anaemia were ruled out by specific tests. The initial diagnosis was mastitis and 2 weeks later the animal returned to the hospital with worsening of clinical signs, intermittent fever, intense pruritus and generalised alopecia. Blood samples were collected for haematological and serum biochemical analyses, and the mammary gland and parotid lymph nodes were biopsied. Rectal palpation revealed a large irregular mass near the left kidney with adhesions of surrounding structures. The animal died before the laboratory results were ready. This report details the clinical, histological and immunophenotypic findings of a case of large lymphoma in a mare.

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Background: Ultrasound Doppler is a new technology that has recently been used in large animal reproduction. As the conventional ultrasound (B-mode) it is a noninvasive technique, but with the advantage of allows the assessment of the hemodynamic of reproductive tract in real time. The observation of important features of the vascularization and changes that occur during physiological processes that were not previously seen on B-mode encourage a reassessment of the concepts already established on the events of the reproductive physiology of animals and their applications. Review: In attempt to re-understand the equine reproductive physiology and finding practical uses to this new technique, authors showed that, during the follicular deviation, features are observed by Doppler before being observed under B-mode ultrasound like changes in the speed of the blood flow two days before deviation of the follicle size and one day before the increase in blood flow area of the follicular wall. According to another study ovulation is characterized by a decreased blood flow of the follicular wall in the last four hours preceding it, as well as the serration of the granulosa layer and formation of a non vascularized apex, but in our ongoing study, the ability to decrease the vascularity was not found. Very vascularized follicles are associated with higher rates of oocyte maturation and pregnant that does less vascularized follicles in the preovulatory phase. Those follicles that have septated evacuation (or prolonged) showed more vascularization and serration of the granulosa one hour before ovulation than follicles that ovulate normally, and this vascularization includes the apex of the follicle, the follicular wall portion that is not vascularized in normal ovulation. Another study reported that hemorrhagic follicles have better vascularization of the follicular wall on the days preceding ovulation than follicles destined to ovulate. Some authors also showed that anovulatory follicles grow in size at the same rate as ovulatory follicles, but the percentage of vascularization of its wall is much smaller at 35 mm. Another study characterized that the vascular wall of the follicle that results in the first ovulation of the year is much smaller on the day before ovulation than the number of vessels present in a follicle that will ovulate in the middle of the breeding season. In these cases, the use of Doppler ultrasound can help to prevent economic losses as insemination of mares in cycles that are not able of resulting in pregnancy. This review aims to gather the information found in the literature about the characteristics of follicular hemodynamic of mares taking into account moments of deviation in follicle size, ovulation, ovulation failure and follicular viability. Conclusion: The Doppler technology has the potential to provide important information about the follicular environment and thus be used in practice in search of the perfect equine reproductive management, achieving better utilization of genetic material and increasing the financial return. The use of this new tool opens a large area for several interesting studies that will contribute to the knowledge of the physiological events of the mare for that this technique can soon be effectively applied.