Is there any law limiting the extent to which one can grow brains / brain organoids in a lab in the United States (e.g., max number of neurons, synapses, etc.)? E.g. to study brain diseases {1} or add biological neurons into traditional silicon computing device {2}.


  • I'm not sure why there would be. Do you mean human brain cells? – Ross Ridge May 31 '20 at 23:03
  • @RossRidge human or another animal. Motivation to legislate: might be able to grow functioning human-size brain at some point, hopefully in a near future. – Franck Dernoncourt May 31 '20 at 23:04
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    Just a comment on the science, not the law. While you can certainly grow neurons in a lab, the only place you can grow a brain is in an embryo - a brain is integrally linked to the body. – Dale M Jun 1 '20 at 1:25
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    @DaleM theguardian.com/science/2019/mar/18/… "Scientists have grown a miniature brain in a dish with a spinal cord and muscles attached, an advance that promises to accelerate the study of conditions such as motor neurone disease." – Franck Dernoncourt Jun 1 '20 at 1:41

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