目的:检测乙烯硫脲致畸胎鼠直肠末端sonic hedgehog(Shh)基因转录因子Gli2基因表达水平及其在胎鼠后肠发育后期的表达水平的变......

The posterior gut of the Drosophila embryo,consisting of hindgut and Malpighian tubules,provides a simple,well-defined s......