Thymosin alpha 1 has been shown to enhance the function of certain immune cells called T and dendritic cells. These white blood cells play pivotal roles in the body’s defense process to anyone with a depressed immune system or suffering from an infection. In addition to its use in the treatment of Hepatitis, AIDS, and cancer, Ta1 has shown exceptional promise in the treatment of Lyme disease. This is unsurprising when one considers the large role the immune system plays in combating the disease.