Body & Brain

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CASE FOR CAUTION  Anesthetics hit young and old brains differently, studies suggest. 

Leo Kanner

Johns Hopkins doctor Leo Kanner published an influential paper in 1943 describing autistic children. This and a host of other moments from autism's past receive an accounting in NeuroTribes, a look at the progression of thought surrounding the condition.

 chemical DHED

TARGETED EFFECT  The chemical DHED produces the hormone estrogen in the brain, but not the body. In mice with tissues genetically modified to light up when exposed to estrogen, pure estrogen produces a bright glowing around the internal organs (center). But mice given DHED (left) do not light up more than untreated mice (right), indicating that DHED does not become estrogen in their bodies. 

Body & Brain

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