pre-embryo

/ priːˈɛmbrɪəʊ /

noun

1. the structure formed after fertilization of an ovum but before differentiation of embryonic tissue

Example Sentences

Other scientists have already used human stem cells to create a “blastoid, ” a structure mimicking a pre-embryo, that can serve as a research alternative to a real one.

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Scientists are using human stem cells to create a structure that mimics a pre-embryo and can serve as a research alternative to a real one.

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But it’s possible to ask whether a pre-embryo’s genetic uniqueness, or its potential to grow into a human being, sets it apart from other tissues.

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According to European Union regulations, a pre-embryo is considered tissue: it must be handled, stored, and transported according to a 2004 directive that also addresses bone marrow for transplants and skin for grafts.

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Conception, artificial or otherwise, is so uncertain that each pre-embryo, once it’s implanted, has only a one-in-three chance of growing into a human being.

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