Morphological changes during the embryonic development of limbs of the green turtle,Chelonia mydas,were studied during t......

[目的]观察豆状囊尾蚴的头节在相对静止与运动时超微结构的变化。[方法]本研究用扫描电镜对位于囊泡内的头节和经人工培养后从囊泡......