Thymosin alpha 1 (Tα1) is a peptide hormone that is composed of 28 amino acids that has been shown to play a role in the regulation of the immune system, specifically in the activation of T-cells. This peptide hormone has been shown to promote the differentiation and proliferation of T-cells, and to enhance the function of T-cells. Additionally, Tα1 has been shown to have anti-inflammatory effects, and to modulate the production of cytokines and other mediators of inflammation.

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