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blastocyst
[ blas-tuh-sist ]
noun
- the blastula of the mammalian embryo, consisting of an inner cell mass, a cavity, and an outer layer, the trophoblast.
blastocyst
/ ˈæəʊˌɪ /
noun
- Also calledblastosphere the blastula of mammals: a sphere of cells ( trophoblast ) enclosing an inner mass of cells and a fluid-filled cavity ( blastocoel )
- another name for germinal vesicle
blastocyst
/ ă′ə-ĭ′ /
- The modified blastula that is characteristic of placental mammals. It has an outer layer, known as a trophoblast , that participates in the development of the placenta. The inner layer of cells develops into the embryo.
51Թ History and Origins
Origin of blastocyst1
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Example Sentences
The technique, called blastocyst complementation, is similar to a technique used to create mice with human immune systems, which have proven to be powerful research tools.
Prior to implantation, an embryo is a ball of about 250 cells organized as a blastocyst.
A blastocyst is the early stage of an embryo, which is defined as the state of development that starts at fertilization and lasts up to eight weeks.
Some fertility centers freeze them one day after fertilization and some wait five or six days until they become blastocysts, which may be 200- to 300-cell organisms.
The investigators first established nine stem cell lines using cells removed from 7-day-old blastocyst embryos.
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