what is thymosin: Frequently asked questions

Switch to full Thymosin Beta 4 immediately. TB-500's actin-binding affinity is insufficient to replicate the cytoskeletal effects required for cell migration assays, wound contraction models, or any protocol where actin polymerization dynamics are a primary outcome measure. Using TB-500 in these contexts will produce inconclusive or negative results that don't reflect the compound's true activity. They reflect using the wrong tool. Verify your peptide source provides third-party HPLC and mass spectrometry data confirming you received the 43-amino-acid sequence, not the fragment.