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Insulin signaling and neurotransmission Insulin can cross the blood-brain barrier from the periphery but it is also locally produced in the brain, where it binds to insulin receptors on neurons and glial cells [6]
Its value comes not from the intact molecule, but from the peptides released during digestion
Adding too much creates unnecessarily dilute solutions that may not fit in a single syringe draw for higher doses
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PMCID: PMC10512826
USA 103 , 50845089 (2006)
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