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These challenges limit peptides clinical application and explain the interest in alternative routes of peptide administration, particularly nose-to-brain (N-to-B) delivery, which allows protein and peptide drugs to reach the brain noninvasively

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The calculator then shows that 2,000mcg now requires 0.4mL (40 units)

Both are designed to support healthy brain function, but they work through different pathways

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Summary Keywords assisted reproductive technology, capacitation, in vitro fertilization, implantation, live birth Citation Gmez-Elas MD, Luque GM, Oscoz-Susino N, Novero AG, Briski O, Ksparas I, Steeman TJ, Stival C, Lavolpe M, Julianelli V, Geller M, Attie M, Vassena R, Krapf D and Buffone MG (2025) Increased reproductive outcomes after optimized sperm preparation