blastocyst

• At this stage, an embryo is called a blastocyst and has about 150 cells. —  All MayoClinic.com Topics
• Developing from the blastocyst, the pre-embryonic stage of a pregnancy during which the neural tube develops, which then marks the beginning of the embryonic stage of development.
• The source of an embryonic stem cell is the blastocyst, formed five days after an egg is fertilized and before it is implanted in the uterus.
• The blastocyst is a very early-stage embryo not yet implanted into the womb. —  Signs of the Times
• The penalty would be the same as that of death or injury to the pregnant woman herself. 144 The bill elevates the status of a fetus, embryo, blastocyst (pre-implantation embryo), or zygote (fertilized egg) to that of the woman for purposes of the offense, and would treat such entities as independent persons for purposes of federal law. 145 —  Hot Air » Top Picks

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