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022 _a0028-0836
040 _aNLM
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245 0 0 _aEmbryo research (contd)
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260 _bNature
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300 _a666 p.
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500 _aPublication Type: Letter
650 0 4 _aBeginning of Human Life
650 0 4 _aBlastocyst
650 0 4 _aEmbryo Research
650 0 4 _aEthics, Medical
650 0 4 _aFertilization in Vitro
650 0 4 _aHumans
650 0 4 _aLife
773 0 _tNature
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999 _c3996489
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