Human Brain Cells Grow in Rats, and Feel What the Rats Feel


Publish Date:
October 12, 2022
The New York Times
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These species-blending experiments raise provocative ethical questions. Before starting the work, Dr. Pasca consulted with experts at the Center for Law and the Biosciences at Stanford, who urged him to pay special attention to the animals’ pain and well-being.

“You’re not just worried about how many mice are in a cage, or how well they’re fed,” said Henry Greely, a Stanford law professor. “This is a new kind of thing. You don’t know what you might see.”

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