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Topic: Blastocele

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	LIFE BEGINS AT CONCEPTION
		Cell division continues, and a cavity known as a blastocele forms in the center of the morula.
		The presence of the blastocyst indicates that two cell types are forming: the embryoblast (inner cell mass on the inside of the blastocele), and the trophoblast (the cells on the outside of the blastocele).
		The inner cell mass becomes the embryo, and the trophoblast becomes the placenta.
	jesuschristsavior.net /prolife.html (2178 words)

	Pregnancy (mammals) - Wikipedia, the free encyclopedia
		A blastocele is a small cavity on the center of the embryo, and the developing embryonary cells will grow around it.
		This new structure with a cavity in the center and the developing cells around it is known as a blastocyst.
		The presence of the blastocyst means that two types of cells are forming, an inner-cell mass growing on the interior of the blastocele and cells growing on the exterior of it.
	en.wikipedia.org /wiki/Pregnancy_(mammals) (759 words)

	Stage 3 (Site not responding. Last check: )
		Cell division continues, and a cavity known as a blastocele forms in the center of the morula.
		Cells flatten and compact on the inside of the cavity while the zona pellucida remains the same size.
		The presence of the blastocyst indicates that two cell types are forming: the embryoblast (inner cell mass on the inside of the blastocele), and the trophoblast (the cells on the outside of the blastocele).
	www.visembryo.com /baby/stage3.html (97 words)

	Int. J. Dev. Biol. - The implications of a unified theory of programmed cell death, polyamines, oxyradicals and ...
		This embryonic regulation of cancer requires simultaneous contact with specific structures on the surfaces of normal cells and exposure to soluble, extracellular signals.
		During studies to identify such soluble factors in the blastocyst, extracellular hydrogen peroxide was discovered in the blastocele fluid.
		Current evidence indicates that this hydrogen peroxide causes apoptosis of inner cell mass cells destined to develop into trophectoderm--the first apoptotic event during mammalian development which likely prevents the formation of ectopic trophectoderm in the soon-to-appear germ layers (histogenesis).
	www.ijdb.ehu.es /web/paper.php?doi=8507572 (312 words)

	SIRM: Graduated Embryo Scoring System (Site not responding. Last check: )
		Those embryos that are not transferred to the uterus are subsequently re-examined 2 to 3 days later to determine whether they have developed into blastocysts (advanced embryos comprising 80 to 120 cells with a central cavity or blastocele).
		The implantation rate per embryo is defined by the number of gestational sacs detected by ultrasound examination 4 weeks following embryo transfer (ET).
		Blastocysts are graded on the basis of their cellularity, differentiation of the trophectoderm (outer layer that develops into the embryo's "root system" or placenta), the inner cell mass (the part that develops into the fetus) and the blastocele.
	www.haveababy.com /infert/gess.asp (847 words)

	USC Fertility
		Blastocele: The fluid-filled cavity in the middle of the blastocyst.
		At this stage, a fluid-filled cavity (the blastocele) develops in the center of the embryo and cells begin to specialize.
		Some of them will go on to become the fetus, some will become the placenta.
	www.uscivf.org /fot_02.shtml (3197 words)

	Blastocyst Culture: Virginia Center for Reproductive Medicine in Reston, VA, Virginia
		A blastocyst contains around 100 cells that are formed into 2 distinct types, the inner cell mass (that goes on to make the baby), and the surface cells called the trophectoderm (that goes on to form the placenta).
		The trophectoderm surrounds a central cavity called the blastocele.
		A blastocyst hatches from the Zona Pellucida (the egg shell) around day 6, and begins the complex process of implantation over the next 24 hours or so.
	www.vcrmed.com /ivf_reston_va/blastocyst_culture.html (374 words)

	santa cruz conference on developmental biology 2002
		Grb2 mutant embryos die between 3.5 and 5.5 dpc and Grb2 ES cells cannot differentiate into endoderm, implicating RTK signaling in endoderm formation (Cheng et al., 1998, Cell 95, 793-803).
		Our in vivo analysis of Grb2 embryos show that the ICM does not differentiate into primitive endoderm as Pem and Hex are not expressed at 4.75 dpc and Oct-4 expression is maintained in the cells facing the blastocele.
		Grb2 mutant embryos cannot differentiate extra-embryonic ectoderm at 4.75 dpc as we cannot observe its morphological differentiation nor Pem expression.
	quad.bic.caltech.edu /~scdb/Chazaud.html (300 words)

	Stock Illustration of Fertilized human egg (zygote) having reached the blastocyst stage. Zygote contains a fluid filled ...
		Zygote contains a fluid filled blastocele is preparing for implantation into endometrium of uterus.
		blastocele, blastocyst, blastula, conceive, contains, egg, endometrium, fallopian, fertilization, fertilized, filled, fluid, having, human, implantation, mature, migration, morula, ova, oviduct, ovum, preparing, reached, sperm, spermatid, spermatozoa, stage, tube, uterine, uterus, zygote, illustration, illustrations, clip art, clipart, picture, pictures, graphic, graphics, drawing, drawings, artwork, 3d605008, royalty free
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	www.fotosearch.com /LIF126/3d605008 (308 words)

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