發(fā)布日期：2006-04-15 來源：- 作者：873 x 550 像素
核心提示：a) Modified circuit diagram from Fig-ure 7.14. The DNA-binding protein (Bmer) activates module B beginning about 60 hours after fer-
tilization. Module B is ampli?ed by module G to transcribe Endo16 at a high rate only in midgut
cells of the larva.
