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Epithalamin is a natural polypeptide complex extracted from bovine pineal glands with variable composition

The landmark telomerase activation study was performed in human fibroblast cell cultures, not living humans (Khavinson et al., 2003)

Scientists derived its sequence from a protective protein naturally present in human gastric juice

Solid-phase peptide synthesis of D-amino acid chains of this length requires specialized reagents (D-Fmoc amino acids are significantly more expensive than their L-counterparts), extended synthesis times, and careful quality control to ensure correct sequence and sufficient purity

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