- Eosinophils in chronically inflamed human upper airway tissues express transforming growth factor beta 1 gene (TGF beta 1). Ohno, I., Lea, R.G., Flanders, K.C., Clark, D.A., Banwatt, D., Dolovich, J., Denburg, J., Harley, C.B., Gauldie, J., Jordana, M. J. Clin. Invest. (1992)