By Tiziana A.L. Brevini

ISBN-10: 1461455316

ISBN-13: 9781461455318

ISBN-10: 1461455324

ISBN-13: 9781461455325

This short deals a concise, convenient evaluate of the most thoughts regarding Embryology, revisited throughout the novel options which are utilized day-by-day in stem telephone study and cellphone remedy orientated investigations. it's in keeping with 3 major parts:

-The approach desirous about lady gamete differentiation and maturation. the most facets with regards to phone biology could be coated and an summary of the epigenetic rules of gametogenesis should be offered.

-Early phases of embryo improvement with a cautious research of the regulatory mechanisms riding cleavage, polarization and genome activation.

-Stem phone and gametogenesis.

The use of the oocyte as a potential resource for the derivation of stem mobilephone traces is mentioned and depicted as a robust device to enquire oocyte efficiency and uneven imprinting. the capability organic implications are evaluated and use of stem cells to derive oocytes is gifted.

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Additional info for Gametogenesis, Early Embryo Development and Stem Cell Derivation

Sample text

The embryo undergoes a series of mitotic divisions, also known as embryonic cleavages, progressing through 2-cell, 4-cell, 8-cell, 16-cell, morula, and blastocyst stages. Further Reading Alberts B, Johnson A, Lewis J, Raff M, Roberts K, Walter P (2002) Mitosis. Molecular biology of the cell. 4th edn. Garland Science, New York Hyttel P, Sinowatz P, Vejlsted M, Betteridge K (2010) Essentials of domestic animal embryology. Saunders Elsevier, Philadelphia Gilbert SF (2000) Developmental biology, 6th edn.

Similarly, in rodents, centrioles completely degenerate during oogenesis and, at the time of germinal vesicle breakdown, multiple foci composed of perinuclear material, which gradually coalesce to form the poles of metaphase spindles, appear. At fertilization, sperm and egg equally contribute haploid genomes as well as the relative centrosome components. 4 Centrosome reduction during oogenesis. Oogonia possesses standard centrosomes containing centrioles and centrosomal proteins. Mammalian primary oocytes lose both centrioles completely, resulting in acentriolar and anastral poles during meiotic I and II divisions.

As already discussed, inner cell mass gives rise to the embryo proper and consists of cells that have the ability to differentiate in every tissue of the body. Because of this ability they are considered to be pluripotent. The inner cell mass soon develops into a bilaminar structure that comprises the epiblast and the hypoblast. Through the process of gastrulation the epiblast gives rise to all three somatic germ layers of the embryo, ectoderm, mesoderm, and endoderm, and allows for the differentiation of the primordial germ cells.

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Gametogenesis, Early Embryo Development and Stem Cell Derivation by Tiziana A.L. Brevini


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