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<p>of the assay.</p>

<p><big> Limitations and ethical considerations </big></p>
<p>Tetraploid complementation involves generation of chimeric embryos and requires in utero gestation, which poses ethical issues that preclude its use in human pluripotent stem cell research. International stem cell research guidelines emphasize ethical oversight and prohibit manipulation of human embryos using techniques such as tetraploid complementation.</p>

<p><big>References</big></p>
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