Naylor, P. H., Friedman-Kien, A., Hersh, E., Erdos, M., & Goldstein, A. L. (1986). Thymosin α1 and thymosin β4 in serum: Comparison of normal, cord, homosexual and AIDS serum. International Journal of Immunopharmacology, 8(7), 667–676. doi:10.1016/0192-0561(86)90001-9