TB500 ni peptide yibice byinshi byakozwe muburyo bwa laboratoire. Ifite imiterere n'imikorere imwe hamwe na Thymosin Beta 4 ikorwa na glande ya thymus mumubiri. TB500 na Thymosin Beta 4 byombi bigizwe na aside amine 43 muburyo bukurikirana kandi bigira ingaruka zimwe mugukiza no gukira. Muri make, TB500 ni verisiyo yubukorikori ya Thymosin Beta 4. Kubwibyo, dukoresha amazina yombi muburyo bumwe kuko ingaruka zose zisa.