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Substances cross the blood-brain barrier through six primary pathways: passive diffusion, transporter-mediated uptake, receptor-mediated transcytosis, paracellular transport, efflux transporters, and temporary disruption techniques (Figure 2)

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The peptide does not bind to growth hormone receptors in muscle tissue and therefore cannot trigger the protein synthesis pathways that mediate muscle hypertrophy

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3) came from studies in which human fibroblasts were reprogrammed into neurons, then treated with Epitalon [53]