Researchers have grown a human brain in a lab, bringing it to the level where it can be used for research. It doesn’t have blood vessels, so it can’t get any bigger (without a heart) and it doesn’t receive any sensory stimuli, so it’s not conscious, but, still, it’s a human brain. It’s reported to be about the size of a pencil eraser or what would be found in a five week old fetus. It was developed to help researchers understand neurological diseases and how various drugs affect the brain. It was grown from skin cells that were manipulated into being pluripotent cells which then became brain cells. The researchers say that since the brain doesn’t “think”, there are not ethical concerns with experimenting on it.

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