preimplantation embryo

pre·im·plan·ta·tion em·bry·o

(prē-implan-tāshŭn embrē-ō)
Implantation begins on the seventh day after fertilization; preimplantation is from day 1 to day 6; some clinicians and lawyers use the term "pre-embryo" for this period, implying that the embryo has not formed.
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Preimplantation embryo development in the mouse requires the latency of TRP53 expression, which is induced by a ligand-activated PI3 kinase/AKT/MDM2-mediated signaling pathway.
Genetic analysis, including the assessment of the genetic profile of the originating embryo can be performed on a single or two blastomeres obtain ed from an early preimplantation embryo.
Human embryonic stem (ES) cells, and other cells derived from the inner cell mass of the preimplantation embryo are totipotent, that is, they are capable of forming any cell or tissue in the human body.
Consequent to the process of fertilization, the preimplantation embryo received a genetic profile that is clearly not that of the mother or father.
There are also slippery slope worries about sex selection: if the HFEA allows licensed clinics to provide sex selection by Microsort, then it might not be easy to deny access to sex selection by means of preimplantation embryo testing.
Temporal pattern of IGF-I expression during mouse preimplantation embryo genesis.
Aside from persons who believe that personhood begins at conception, all parties in the debate agree that the preimplantation embryo is not yet an entity with interests or rights, and therefore can be discarded or used in research in ways that human research subjects cannot.
To repeat, the panel deserves praise for the care with which it analyzed the moral status of the preimplantation embryo.
These results demonstrate that bovine cytoplasm can support the development of later stages of a preimplantation embryo from murine-bovine iSCNT.
is right, within a handful of years we will be able to do preimplantation embryo screening for traits such as height, hair pattern, hair color, eye color, and the like.