https://www.wired.com/story/how-to-be-humane-to-a-lab-grown-brain/

Part of the brain’s allure for scientists is that it is so deeply personal—arguably the core of who we are and what makes us human. But that fact also renders a large share of imaginable experiments on it monstrous, no matter how well intended. Neuroscientists have often had to swallow their frustration and settle for studying the brains of experimental animals or isolated human neurons kept alive in flat dishes—substitutes that come with their own ethical, practical and conceptual limitations.

Original story reprinted with permission from Quanta Magazine, an editorially independent publication of the Simons Foundation whose mission is to enhance public understanding of science by covering research develop­ments and trends in mathe­matics and the physical and life sciences.