Description

TB-500 is a short peptide segment or fragment of the naturally-occurring thymosin beta-4 hormone (TB-4.) To be clear, TB-500 most emphatically is not TB-4, although it’s often sold under that name. TB-4 itself is as yet an extremely pricey, rare research material that is not yet available to bodybuilding or to equine enhancement.

In the body, TB-4 is produced is the thymus, a gland which is at its largest in children, atrophies as adulthood progresses, and is virtually non-existent in the elderly. It is also produced locally in various cells, and is particularly found in wound fluids, as well as in fairly high concentration in the cytoplasm of some cells. In various studies, TB-4 has been found able to promote various forms of wound healing, to promote differentiation of stem cells, and to reduce inflammation.

Protein hormones such as TB-4 do not bind in their entirety to a receptor site, as they are too large to fit. Instead, an active region of the protein fits into receptor sites.

The TB-500 peptide sequence is identical with the active region area of TB-4 and shares many and possibly all of the properties of TB-4, in a form which is more economical to produce.