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- W2082365105 endingPage "350" @default.
- W2082365105 startingPage "328" @default.
- W2082365105 abstract "Knowledge of the nature of embryo growth, and the handling and scoring of quality in human embryos are significant aspects for embryologists in IVF clinics. This review describes the formation, growth and maturation of human oocytes, many aspects of fertilization in vitro, embryonic transcription during preimplantation stages, and the formation of polarities, timing controls, role of mitochondria and functions of endocrine and paracrine systems. Modern concepts are fully discussed, together with their significance in the practice of IVF. This knowledge is essential for the correct clinical care of human embryos growing in vitro, especially in view of their uncharacteristic tendency to vary widely in implantation potential. Underlying causes of such variation have not been identified. Stringent tests must be enforced to ensure human embryos develop under optimal conditions, and are scored for quality using the most advanced techniques. Optimal methods of culture are described, including methods such as co-culture introduced to improve embryo quality but less important today. Detailed attention is given to quality as assessed from embryonic characteristics determined by timers, polarities, disturbed embryo growth and anomalous cell cycles. Methods for classification are described. Approaches to single embryo transfers are described, including the use of sequential media to produce high-quality blastocysts. These approaches, and others involved in surgical methods to remove fragments, transfer ooplasm or utilize newer approaches such as preimplantation diagnosis of chromosomal complements in embryos are covered. New outlooks in this field are summarized." @default.
- W2082365105 created "2016-06-24" @default.
- W2082365105 creator A5019667930 @default.
- W2082365105 creator A5021801347 @default.
- W2082365105 creator A5038724372 @default.
- W2082365105 date "2002-01-01" @default.
- W2082365105 modified "2023-09-24" @default.
- W2082365105 title "Fundamentals of human embryonic growth in vitro and the selection of high-quality embryos for transfer" @default.
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