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Related to blastocyst: blastocyst transfer


The modified blastula that is characteristic of placental mammals. Also called blastodermic vesicle.

blas′to·cys′tic adj.


1. (Biology) Also called: blastosphere the blastula of mammals: a sphere of cells (trophoblast) enclosing an inner mass of cells and a fluid-filled cavity (blastocoel)
2. (Biology) another name for germinal vesicle


(ˈblæs tə sɪst)

the blastula of the mammalian embryo consisting of an inner cell mass, a cavity, and the trophoblast.


(or blastula) A hollow ball of cells formed from a morula about five days after fertilization.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.blastocyst - the blastula of a placental mammal in which some differentiation of cells has occurred
blastosphere, blastula - early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs
References in periodicals archive ?
Failure to build the blastocyst will result in a miscarriage and yet the mechanisms underlying the construction of the blastocyst are mostly unknown.
The hypothesis was that these cells should be less programmed than ES cells, which are taken from the 00-cell stage of development, called a blastocyst.
Seven days after fertilisation, the blastocyst is embedded and growing.
The embryos were maintained in potassium Simplex Optimization Medium (KSOM) for 96 hr and allowed to grow until the blastocyst stage.
Penzias and fellow committee members reviewed national data from 2013 that showed similar pregnancy rates for women aged 42 years and younger who received a single euploid blastocyst or two untested blastocysts.
Group culture of day 3 good and low quality embryos influences the rate of high quality blastocyst formation in comparison with separate culture of low and high quality embryos.
Lipids are important sources of energy in all embryonic stages occurred before the blastocyst stage, where triglycerides are the main lipids synthesized in the cytoplasm of the bovine oocyte and embryo [12, 28].
The results showed that the blastocyst rates in injection 560 ng/uL Npm and 1000 ng/uL PGA groups were higher than those of other groups.
116 [+ or -] 2 h after insemination, should be a completely expanded blastocyst to the hatched blastocyst, with a pronounced ICM, which is easily discernable.