• blastocyst
  • This has enabled us to identify a major group of embryos in which we can predict not only the spatial origin of each given four-cell blastomeres, but also which region of the blastocyst is most likely to be occupied by its progeny. (biologists.org)
  • Thus, in embryos dividing in this way, the progeny of the earlier meridionally dividing cell contribute predominantly to the embryonic part of the blastocyst. (biologists.org)
  • Cytosolic free Ca2+ levels were rapidly elevated in embryos at the 4-cell to blastocyst stages after exposure to 10 nM calcitonin. (biologists.org)
  • These findings support the concept that calcitonin secretion within the progesterone-primed uterus and the coordinate expression of CR-1a by preimplantation embryos regulates blastocyst differentiation through receptor-mediated Ca2+ signaling. (biologists.org)
  • stage
  • In conclusion, this study shows that while all four-cell blastomeres can have full developmental potential, they differ in their individual developmental properties according to their origin in the embryo from as early as the four-cell stage. (biologists.org)
  • We will isolate, culture and cryopreserve all healthy 2-cell stage embryos. (northwestern.edu)
  • common
  • In the less common situation (20% of embryos) when two-cell blastomeres undergo either sequential meridional or equatorial/oblique divisions, a relationship between the first cleavage and the embryonic-abembryonic axis is not observed. (biologists.org)
  • single
  • Due to our current staffing and animal room health status, the only way at this time to freeze homozygous embryos through the TTML requires that your lab maintains the single housed males and hormonally treats/mates the females. (northwestern.edu)