Thymosin

[3] The discovery of thymosins in the mid 1960s emerged from investigations of the role of the thymus in development of the vertebrate immune system.

Begun by Allan L. Goldstein in the Laboratory of Abraham White at the Albert Einstein College of Medicine in New York, the work continued at University of Texas Medical Branch in Galveston and at The George Washington University School of Medicine and Health Sciences in Washington D.C.

Known as "Thymosin Fraction 5", this was able to restore some aspects of immune function in animals lacking thymus gland.

[5] When individual thymosins were isolated from Fraction 5 and characterized, they were found to have extremely varied and important biological properties.

[7][8] The process of hair growth utilizes many cellular and molecular mechanisms common to angiogenesis and wound healing.