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BLASTULATION

Blastulation

Sphere of cells formed during early embryonic development in animals

Blastulation is the stage in early animal embryonic development that produces the blastula. In mammalian development, a blastula develops into the blastocyst

Blastulation

Ontogeny

Origination and development of an organism

Development of an organism happens through fertilization, cleavage, blastulation, gastrulation, organogenesis, and metamorphosis into an adult. Each species

Ontogeny

Human embryonic development

Development and formation of the human embryo

pellucida is referred to as a morula. Cleavage itself is the first stage in blastulation, the process of forming the blastocyst. Cells differentiate into an outer

Human embryonic development

Human_embryonic_development

Zygote

Diploid eukaryotic cell formed by fertilization between two gametes

the morula. Through the processes of compaction, cell division, and blastulation, the conceptus takes the form of the blastocyst by the fifth day of development

Zygote

Trophoblast

Early embryonic structure that gives rise to the placenta

extraembryonic structures that do not directly contribute to the embryo. After blastulation, the trophoblast is contiguous with the ectoderm of the embryo and is

Trophoblast

Glossary of developmental biology

blastocyst, containing a differentiated inner cell mass and trophectoderm. blastulation A stage in the embryonic development of all animals defined by the formation

Glossary of developmental biology

Glossary_of_developmental_biology

Animal embryonic development

Process by which animal embryos form and develop

develops into a structure called a blastula through a process called blastulation. The blastula develops into a structure called a gastrula through a process

Animal embryonic development

Animal_embryonic_development

Mechanobiology

expression of genes that give rise to the embryonic developmental process of blastulation. The loss of stiffness-controlled transcription factor Cdx leads to the

Mechanobiology

Endocrinology of reproduction

embryonic development, paracrine/juxtacrine signaling of hCG induces blastulation and neurulation. An in vitro model of early human embryogenesis (human

Endocrinology of reproduction

Endocrinology_of_reproduction

Embryo quality

Estimation of embryo quality for in vitro fertilization

from 1 to 3 cells, as well as the initiation of compaction and start of blastulation. Also, two-pronuclear zygotes (2PN) transitioning through 1PN or 3PN

Embryo quality

Embryo_quality

Oocyte selection

Procedure performed prior to IVF

differences in birefringence between eggs, which is a predictor of compaction, blastulation and pregnancy. Potentially, polar body biopsy may be used for molecular

Oocyte selection

Oocyte_selection

Morphokinetics IVF

firmly together and continue to develop into a blastocyst. 4. Blastocyst Blastulation is marked by the appearance of a fluid-filled cavity (blastocoel) surrounded

Morphokinetics IVF

Morphokinetics_IVF

Preimplantation genetic diagnosis

Genetic profiling of embryos prior to implantation

of in vitro culture. This allows the developing TE to protrude after blastulation, facilitating the biopsy. On day five post-fertilization, approximately

Preimplantation genetic diagnosis

Preimplantation_genetic_diagnosis

Extravillous trophoblast

Cell type

trophectoderm. As the trophectoderm separates from the inner cell mass during blastulation, early trophoblasts begin to form the placenta. Later in placental development

Extravillous trophoblast

Extravillous_trophoblast

Richard Gardner (embryologist)

British embryologist and geneticist

(2007) The axis of polarity of the mouse blastocyst is specified before blastulation and independently of the zona pellucida. Hum. Reprod. 22, 798–806. Gardner

Richard Gardner (embryologist)

Richard_Gardner_(embryologist)

Emil Godlewski (junior)

regulating the process of fertilization, as well as early embryo development, blastulation and gastrulation. He was also interested in the origin of the primary

Emil Godlewski (junior)