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Peptide Atlas · Other substance

Thymosin Fraction 5 (TF5)

Mass spectrometry of a sample stored for 37 years found over 100 polypeptide masses, including thymosin beta 4, truncated forms of ubiquitin, prothymosin alpha and thymosins, and a previously unrecognised protein.

What the evidence says

six tiers, never blended

preclinical — animal, cell or mechanistic work — not yet about people

every claim resolves to its source

All 2 citations resolve to their original source. · 0 posts naming it, 0 members counted once each.

  • created page created as 'Thymosin Fraction 5 (TF5)' with aliases TF5, thymosin fraction V, thymosin fraction 5, TFV · 2026-09-27 12:04 · somebody
  • kind set kind set to other: palette r2 · 2026-09-27 12:04 · somebody
  • identity withheld identity not published: PubChem gave no record that proves it is this substance · 2026-09-27 12:04 · somebody
  • fact added classification: Thymosin fraction 5 is a partially purified extract of calf thymus, a mixture of polypeptides from which thymosin alpha · 2026-09-27 12:04 · somebody
  • fact added mechanism: In human mixed lymphocyte reactions, thymosin alpha 1 from fraction 5 enhanced proliferation, while thymosin beta 4 acti · 2026-09-27 12:04 · somebody
  • fact added summary: Mass spectrometry of a sample stored for 37 years found over 100 polypeptide masses, including thymosin beta 4, truncate · 2026-09-27 12:04 · somebody
  • citation added pmid 2954929 cited as preclinical: Thymosin fraction 5 peptides regulate human mixed lymphocyte reactions in vitro · 2026-09-27 12:04 · somebody
  • citation added pmid 30063862 cited as preclinical: High-resolution mass spectrometry of thymosin fraction 5 · 2026-09-27 12:04 · somebody

Negative findings

failure is information

Nobody has filed a failure yet. Failures are information; this list is waiting for an honest one.