In embryology, cleavage is the division of cells in the early development of the embryo, following fertilization. The zygotes of many species undergo rapid...

which a crystal or mineral tends to split Cleavage (embryo), the division of cells in an early embryo Cleavage (geology), foliation of rock perpendicular...

formation of the human embryo. It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the...

multicellular embryo proceeds through a series of recognizable stages, often divided into cleavage, blastula, gastrulation, and organogenesis. Cleavage is the...

significant growth (a process known as cleavage) and cellular differentiation, leading to development of a multicellular embryo after passing through an organizational...

develops following cleavage of the zygote after fertilization. It is the first fluid-filled cavity or lumen formed as the embryo enlarges, and is the...

durations of embryo culture, conferring different stages in embryogenesis. The main stages at which embryo transfer is performed are cleavage stage (day...

birthweight than those born from non-frozen blastocysts. For early cleavage embryos, frozen ones appear to have at least as good obstetric outcome, measured...

(see: Bilateral cleavage), or rotational (see: Rotational cleavage). In holoblastic cleavage, the entire egg will divide and become the embryo, whereas in...

embryo culture are until cleavage stage (day two to four after co-incubation) or the blastocyst stage (day five or six after co-incubation). Embryo culture...

highly stereotyped cleavage patterns and cell fates. Maternally deposited mRNAs establish the organizing center of the sea urchin embryo. Canonical Wnt and...

twinning is not increased after blastocyst transfer compared with cleavage-stage embryo transfer. There are significantly higher odds of preterm birth (odds...

blastomere size within the embryo is dependent not only on the stage of the cleavage, but also on the regularity of the cleavage amongst the cells. If the...

which undergoes many cleavages to develop into a ball of cells called a morula. Only when the blastocoel is formed does the early embryo become a blastula...

diagnosis (PGD or PIGD) is the genetic profiling of embryos prior to implantation (as a form of embryo profiling), and sometimes even of oocytes prior to...

mitosis. After the 3rd cleavage division, the embryo begins the process of compaction, which, in human, is only completed when the embryo consists of 8-16 cells...

disc, is the embryo-forming part on the yolk of the egg of an animal that undergoes discoidal meroblastic cleavage. Discoidal cleavage occurs in those...

include the animal and vegetal poles of the embryo. The third cleavage is equal and equatorial so that the embryo has four blastomeres both in the vegetal...

is a morula and contains cells called blastomeres. Cleavage prepares the zygote to become an embryo, which is from 2 weeks to 8 weeks after conception...

fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own,...

implantation, the embryo remains in a protein shell, the zona pellucida, and undergoes a series of rapid mitotic cell divisions called cleavage. A week after...

development have been preserved – no embryos have been interpreted as having undergone a large number cleavage stages. Some embryos have been interpreted as colonies...

forms: schizocoelous or schizocoelic) is a process by which some animal embryos develop. The schizocoely mechanism occurs when secondary body cavities...

implantation, the developing embryo is sometimes termed as a preimplantation-conceptus. This stage has also been referred to as the pre-embryo in legal discourses...

not complete. This type of meroblastic cleavage is called discoidal because only the blastodisc becomes the embryo. In fish, waves of calcium released direct...

Studies using the EmbryoScope (tm) time-lapse incubator have used several indicators for embryo quality, such as direct cleavage from 1 to 3 cells, as...

its yolk are a single giant cell. After the fertilization, the cleavage of the embryo leads to the formation of the germinal disc. As food, the chicken...

specification in these embryos. Following fertilization in the oviduct, the mammalian embryo undergoes a relatively slow round of cleavages to produce an eight-cell...

morula. The cleavage divisions of CS2 embryos do not occur synchronously. And the fate of the blastomeres is not yet determined. The two-cell embryo is spherical...

during meiosis that is prone to errors. However, in embryos that have developed to the cleavage stage, an equal maternal, paternal contribution to monosomies...