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  • Trophoblast
  • The other two types of stem cell in the blastocyst are the extra-embryonic trophoblast stem cells (TSCs), which will form the placenta, and primitive endoderm stem cells that will form the so-called yolk sac, ensuring that the foetus's organs develop properly and providing essential nutrients. (cam.ac.uk)
  • placental
  • Monozygotic twins derive from a single zygote that undergoes division at varying stages of development, the timing of which ultimately determines placental sharing. (springer.com)
  • embryo stage
  • View different clinic success rates by age of the woman, as well as optionally by cycle type and diagnosis or embryo stage at transfer. (cdc.gov)
  • fragments
  • The fact that polar body DNA can persist to the blastocyst stage provides evidence that excluded cell fragments should not be used for diagnostic purposes and should be avoided when performing embryo biopsies as there is a risk of diagnostic errors. (generaroma.it)
  • Prenatal
  • Prenatal development starts with fertilization the first stage in embryogenesis which continues in fetal development until birth. (wikipedia.org)
  • This is the stage of prenatal development during which drugs, toxins, radiation and infection can be most damaging. (healthfully.com)
  • Fertility
  • Fertility Preservation can be accomplished in the embryology laboratory at Atlantic Reproductive by either vitrifying blastocysts, as described above, or gametes (sperm or eggs). (atlanticfertility.com)
  • cycles
  • Thus, although there is a benefit favouring blastocyst transfer in fresh cycles, it remains unclear whether the day of transfer impacts on cumulative rates of live birth and pregnancy. (cochrane.org)
  • Clinical outcome data for frozen cycles between January 2011 and August 2012 were stratified according to carrier and cell stage. (biomedcentral.com)
  • Early
  • Term designating the early stages of development from conception to the eighth week of pregnancy. (cpma.ch)
  • In other animals the very early stages of embryogenesis are the same as those in humans. (wikipedia.org)
  • In the early blastocyst , this initial, imprinted X-inactivation is reversed in the cells of the inner cell mass (which give rise to the embryo), and in these cells both X chromosomes become active again. (wikipedia.org)
  • Data
  • Interpretation of these data is confounded by biological factors, such as variable embryo staging and cell-type ambiguity, as well as technical challenges in the collective analysis of datasets produced with different sample preparation and sequencing protocols. (biologists.org)