Glucocorticoid-inducible gene expression vectors for use in Drosophila melanogaster Schneider 2 cells4410, Poels, J, Martinez A.J., Suner M.M., De Loof A., Dunbar S.J., and J. Broeck Vanden , Insect Mol.Biol., 0/4/2004, Volume 13, Issue 2, Number 211, p.205 - 211, (2004)