Two spook paralogous genes in ecdysteroid biosynthetic pathway are complementarily expressed at different developmental stages in Drosophila melanogaster. - Ono, H.; Warren, J.T.; Rewitz, K.; Gilbert, L.I.; O'Connor, M.B. (Program and Abstracts. 47th Annual Drosophila Research Conference, Houston, TX, 2006, 2006)