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Nobody thought that many of the proteins or bio markers that affect the brain would even be in blood. It was thought, basically, that those proteins and those markers would only be in the brain in the spinal fluid, but what we’ve learned is that a small amount of the spinal fluid, the cerebral spinal fluid, actually leaks into the blood through the blood brain barrier and because our technology can detect things that are so minute in blood, we can test what’s going on in the brain.

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