blastocyst

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Related to blastocysts: Blastocystis hominis

blastocyst

 [blas´to-sist]
the mammalian conceptus in the post-morula stage, consisting of the trophoblast and an inner cell mass.
Early blastocyst. From Dorland's, 2000.

blas·to·cyst

(blas'tō-sist),
The modified blastula stage of mammalian embryos, consisting of the embryoblast or inner cell mass and a thin trophoblast layer enclosing the blastocystic cavity or blastocele.
[blasto- + G. kystis, bladder]

blastocyst

/blas·to·cyst/ (-sist) the mammalian conceptus in the postmorula stage, consisting of an embryoblast (inner cell mass) and a thin trophoblast layer enclosing a blastocyst cavity.

blastocyst

(blăs′tə-sĭst′)
n.
The modified blastula that is characteristic of placental mammals. Also called blastodermic vesicle.

blas′to·cys′tic adj.

blastocyst

[blas′təsist]
Etymology: Gk, blastos + kystis, bag
the embryonic form that follows the morula in human development. Implantation in the wall of the uterus usually occurs during this stage, approximately 8 to 13 days after fertilization. The blastocyst consists of an outer layer (trophoblast) which is attached to the inner cell mast.
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Early blastocyst

blastocyst

A pre-implantation embryo consisting of a thin-walled hollow sphere of 16–40 cells, which appears in early mammalian development, the wall of which is the trophoblast. The embryo proper corresponds to a mass of cells at one side, which is equivalent to the blastula.

blas·to·cyst

(blas'tō-sist)
The modified blastula stage of mammalian embryos (including human), consisting of the embryoblast (inner cell mass) and a thin trophoblast layer enclosing the blastocystic cavity.
Synonym(s): blastodermic vesicle.
[blasto- + G. kystis, bladder]

blastocyst

The state of the development of the embryo at about eight days after fertilization, when implantation in the wall of the womb occurs. At this stage it consists of a double-layered sphere full of fluid. The outer layer, the trophoblast, forms the placenta, the inner layer forms the future fetus.

blastocyst

the BLASTULA of mammals, differing from that of lower vertebrates in consisting of an outer wall of cells, the TROPHOBLAST, by which the embryo implants in the uterus, and in having an inner cell mass, the embryonic disc, from which the embryo is formed.

Blastocyst

A cluster of cells representing multiple cell divisions that have occurred in the fallopian tube after successful fertilization of an ovum by a sperm. This is the developmental form which must leave the fallopian tube, enter the uterus, and implant itself in the uterus to achieve actual pregnancy.
Mentioned in: Infertility

blastocyst

the mammalian conceptus in the post-morula stage, consisting of the trophoblast, an inner cell mass, and a central, fluid-filled cavity.
References in periodicals archive ?
The ROS levels in blastocysts were measured using the dichlorodihydrofluorescein diacetate method ([H.
The embryos were maintained in potassium Simplex Optimization Medium (KSOM) for 96 hr and allowed to grow until the blastocyst stage.
These studies also claim that pregnancy rates of up to 50% can be acquired by the transfer of blastocysts when compared with embryo transfer at the cleavage stage (15-21).
To obtain the stage-specific cytoplasmic accumulation lipid during early bovine embryo development, four in vitro developmental stages were assessed: 2-4, < 4 cell embryos (72 hpi), morulae (144 hpi) and blastocysts (168 hpi).
It has been shown that this protein is associated with aneuploidy since its expression was elevated in the secretome samples of the aneuploid blastocysts [37].
We could learn from Figure 1(a) that blastocysts have a bigger shape in control group than those in 0.
The births of cloned piglets also confirmed that nuclear transferred blastocysts that developed after being cultured in freeze-thawed PZM3 are of good quality (Du et al.
3] These findings suggest that blastocyst transfer should be associated with a lower incidence of ectopic pregnancy compared to cleavage stage transfer.
The direct transmission of movement in all directions gives a "real-time feeling," and makes the instrument an ideal platform for a range of applications, including microinjection and manipulation of suspension cells such as oocytes and blastocysts.
Current methodology recommends freezing the biopsied blastocysts, waiting for the CCS results, and then later, returning the best euploid blastocyst in a future cycle.