TB-1000 is a synthetic version of the naturally occurring peptide Thymosin Beta 4 (TB4), which is present in virtually all human and animal cells. TB4 initiates a cascade of beneficial effects in the body promoting myocardial and endothelial cell migration. TB 1000 binds to actin and promotes cell migration, including the mobilization, migration, survival, and differentiation of stem/progenitor cells, which form new blood vessels and regenerate the tissue