T Cell Formula by Ecological Formulas is an advanced supporter of the immune system.* By mimicking the function of the thymus gland, it supports the generation of new T cells, the backbone of your immune system.* When you take T Cell Formula from Ecological Formulas, you're giving your body an extra dose of the substances produced by your thymus gland.* '¢ Thymosins are tiny proteins that interact with the immune system. They have been shown to support immune health in animals.* '¢ Vitamin C protects your organs against external threats.* '¢ This Ecological Formulas supplement contains tissue derived from lambs.