If we want to know about TB500 for bodybuilding, we have to know the relationship between TB500 and Tβ4 at the first. What is Tβ4? Tβ4 (Thymosin-beta4) is naturally present in the body, originally isolated from the thymus gland, and gradually found in many other tissues with the development of biotechnology.  It is a major cellular component in many tissues …