Results 171 to 180 of about 56,325 (220)
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To blastocyst or not to blastocyst? That is the question
Human Reproduction, 2001Recent advances in culture media preparations have allowed for cleavage embryos to be developed to the blastocyst stage. Blastocysts are regarded as having increased implantation potential, and two blastocysts are typically transferred, which reduces the occurrence of high order multiple gestations.
M M, Alper +3 more
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WIREs Developmental Biology, 2016
The blastocyst is a mammalian invention that carries the embryo from cleavage to gastrulation. For such a simple structure, it exhibits remarkable diversity in its mode of formation, morphology, longevity, and intimacy with the uterine endometrium. This review explores this diversity in the light of the evolution of viviparity, comparing the three main
Stephen R, Frankenberg +3 more
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The blastocyst is a mammalian invention that carries the embryo from cleavage to gastrulation. For such a simple structure, it exhibits remarkable diversity in its mode of formation, morphology, longevity, and intimacy with the uterine endometrium. This review explores this diversity in the light of the evolution of viviparity, comparing the three main
Stephen R, Frankenberg +3 more
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Reproduction, Fertility and Development, 2015
The mammalian blastocyst exhibits an idiosyncratic metabolism, reflecting its unique physiology and its ability to undergo implantation. Glucose is the primary nutrient of the blastocyst, and is metabolised both oxidatively and through aerobic glycolysis.
David K, Gardner, Alexandra J, Harvey
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The mammalian blastocyst exhibits an idiosyncratic metabolism, reflecting its unique physiology and its ability to undergo implantation. Glucose is the primary nutrient of the blastocyst, and is metabolised both oxidatively and through aerobic glycolysis.
David K, Gardner, Alexandra J, Harvey
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Blastocyst Microinjection Automation
IEEE Transactions on Information Technology in Biomedicine, 2009Blastocyst microinjections are routinely involved in the process of creating genetically modified mice for biomedical research, but their efficiency is highly dependent on the skills of the operators. As a consequence, much time and resources are required for training microinjection personnel.
Leonardo S. Mattos +3 more
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European Journal of Obstetrics & Gynecology and Reproductive Biology, 2004
Blastocyst are preimplantation embryos that have successfully passed the critical step of genomic activation and have so a high developmental potential, thus allowing to reduce the number of embryos transferred. Blastocyst culture and freezing have really started in IVF programs in the early nineties, when it was possible to obtain good blastocysts ...
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Blastocyst are preimplantation embryos that have successfully passed the critical step of genomic activation and have so a high developmental potential, thus allowing to reduce the number of embryos transferred. Blastocyst culture and freezing have really started in IVF programs in the early nineties, when it was possible to obtain good blastocysts ...
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Antigenicity of the mouse blastocyst
Canadian Journal of Zoology, 1972It has been shown that development of mouse blastocysts, transplanted to ectopic sites in mice, can be inhibited by preimmunizing the host against transplantation antigens of the donor strain. Similar inhibition can be produced by repeated transplants of blastocysts to extrauterine sites in one host.
D A, James, S M, Yoshida
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2005
Experimental models of blastocyst development based on in vitro culture have played a prominent role in advancing our understanding of peri-implantation development, a process that is relatively inaccessible in vivo. Blastocyst culture provides a robust approach for examining embryonic interactions with the microenvironment under highly controlled ...
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Experimental models of blastocyst development based on in vitro culture have played a prominent role in advancing our understanding of peri-implantation development, a process that is relatively inaccessible in vivo. Blastocyst culture provides a robust approach for examining embryonic interactions with the microenvironment under highly controlled ...
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On the orientation of the implanting blastocyst
Development, 1967ABSTRACTThe sequence of events in the orientation of the blastocyst is described. Six a priori mechanisms for orientating the blastocyst are presented. It is concluded that the only mechanism fulfilling the available morphological and experimental observations is one in which the inner cell mass is free to travel round the inside of the trophoblast ...
D R, Kirby, D M, Potts, I B, Wilson
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Prostaglandins in Rabbit Blastocysts
Science, 1975Rabbit blastocysts recovered at 144 hours post coitum contained the prostaglandins F and E-A. We suggest that one or more of these prostaglandins act as mediators in blastocyst steroidogenesis. (In another study we have demonstrated steroidogenesis in rabbit blastocysts).
Z, Dickmann, C H, Spilman
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