Director’s Blog The physicist and mathematician Freeman Dyson once noted, “New directions in science are launched by new tools much more often than by new concepts.” 1 This week marks the publication of a new tool that may alter the way we look at the brain. Karl Deisseroth and his colleagues at Stanford University have developed a method they call CLARITY. Yes, CLARITY is an acronym, for Clear Lipid-exchanged Anatomically Rigid Imaging/immunostaining-compatible Tissue hYdrogel.

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