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That last point is important for this discussion

The effect of lorazepam on the motor cortical excitability in man

Accordingly, the chromosomal locations of the responsible genes in the mutants were mapped, decreasing the number of candidate responsible genes to nine genes on the X chromosome

PMID 22451889

By combining multiple peptides into a single system, GLOW provides a streamlined model for studying coordinated peptide activity and multi-pathway interactions in controlled laboratory environments

In the present paper we will first explore what findings have already been reported, linking sleep with brain plasticity