Methods The developing inner ears of C57BL/6 embryonic mice,aged from eighth embryonic day (E8) to just natal mice (P0), were observed by transmission electron microscope.

• 方法 利用透射电镜观察从胚胎第 8天到刚出生的C5 7BL 6小鼠耳蜗感觉上皮的增殖、凋亡及分化的变化。