Blog dedicated to the continuous education in Gynecology and Endocrinology

 

Genetics and stem cells

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Chromosomal aneuploidy in human oocytes
Gianaroli Luca

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Gene expression profiles of oocytes and cumulus cells
Patrizio Pasquale

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Genetic screening in infertile couples for ART
Simi Paolo

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Human embryonic and pluripotent stem cells
Veiga Anna

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Modern embryo biotechnology with applications in ART
Illmensee Karl

(13th World Congress on Human Reproduction – March 5-8 2009)

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• September, 2008 •

Extraembryonic tissues as a source of stem cells

Marcia Riboldi and Carlos Simon

Introduction

The placenta is a fetal organ, responsible for nutrient and gas exchange between the mother and fetus throughout pregnancy [1]. At day 6.5, gastrulation begins in the posterior region of the embryo. Pluripotent cells located in the epiblast will produce the three germ layers of the embryo and germ cells, as well as the extraembryonic mesoderm of the yolk sac, amnion, and allantois [2,3,4,5]. Eight days after fertilization, the trophoectoderm differentiate into two layers, cytotrophoblast and syncytiotrophoblast. more

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