pre-embryo

pre-embryo
pre-em·bry·o (prē-ĕmʹbrē-ōʹ) n. pl. pre-em·bry·os
A fertilized ovum up to 14 days old, before it becomes implanted in the uterus.
  pre-em'bry·onʹic (-ŏnʹĭk) adj.

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Universalium. 2010.

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