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Morphological evaluations

Embryologists are in daily contact with microscopic images of cells, gametes, zygotes, and embryos. As these images are not always directly transmissible to the medical staff or the patients, they have to be analyzed and summarized by revealing with words their main morphological characteristics. The best way to achieve this is to use a consensual classification, such as that of ESHRE (1). A related task is to assess their “quality” or “normality” to establish a prognosis of their future behavior.

Some of the important morphological features of gametes and embryos are presented in individual chapters. Our objective is to use a set of quantifiable or categorizing characteristics, in order to reduce as much as possible the uncertainties induced by globalizing evaluations of type A, B, C etc...

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M. Cristina Magli, Gayle M. Jones, Kersti Lundin, Etienne Van den Abbeel and The Special Interest Group on Embryology. Atlas of human embryology: from oocytes to preimplantation embryos. Human Reproduction, 27, Suppl. 1 (2012).