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Tchang: Research-grade peptides are largely unregulated for human use in terms of sterility, purity and safety compared to FDA-approved peptides
The FDA has issued warning letters to companies marketing unapproved peptide products
Of the 48 inter-molecular NOE restraints, only 2 NOEs could be assigned unambiguously and correspond to contacts between p53-Trp53 HE# - FOXO4-Leu160 HD# and p53-Trp53 HD#FOXO4-Leu109 HD# (Supplementary Note 1)
doi: 10.3390/nu9030243 237
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