TB500 Thymosin Beta 4 Acetate 5MG is a 5-milligram format of thymosin beta 4 (TB4) acetate, a synthetic version of a naturally occurring 43 amino acid peptide. Researchers study thymosin beta 4 in models involving actin binding, cell migration, and tissue level repair signaling. Studies have also examined TB4 in the context of angiogenesis, inflammation pathways, and wound biology in preclinical settings.