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Intelligence - nature or nurture? Researchers find a gene for intelligence and also that a bigger brain matters, yet other recent articles show how motivation affects learning.
 

Neurological diseases share common blood-brain barrier defects

Although stroke, epilepsy, multiple sclerosis, amyotrophic lateral sclerosis (ALS) and traumatic brain injury each affect the central nervous system differently, a new study finds that they share common defects in the blood-brain barrier that can be traced to a single set of genes. The findings could yield new approaches for treating brain diseases.
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