Is there any law limiting the extent to which one can grow brains in a lab in the United States? (e.g., max number of neurons, synapses, etc.)

Question

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}.

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References:

• {1} Benam, Kambez H., Stephanie Dauth, Bryan Hassell, Anna Herland, Abhishek Jain, Kyung-Jin Jang, Katia Karalis et al. "Engineered in vitro disease models." Annual Review of Pathology: Mechanisms of Disease 10 (2015): 195-262. https://doi.org/10.1146/annurev-pathol-012414-040418
• {2} https://www.cclabs.ai/