Membrane structural specialization of the toad urinary bladder revealed by the freeze-fracture technique
Membrane structural specialization of the toad urinary bladder revealed by the freeze-fracture technique
复制标题
冷冻断裂技术揭示蟾蜍膀胱的膜结构特化
作者：
J. Wade
摘要通过冷冻断裂电子显微镜对蟾蜍膀胱的检查表明，富含线粒体的上皮细胞具有独特的膜结构特化。在管腔膜和基底膜以及这种细胞类型的某些细胞内囊泡中发现了独特的杆状膜内颗粒。腔膜结构组织的两种离散模式的一致发现支持蟾蜍膀胱上皮内存在两种富含线粒体的细胞形态的可能性。
SummaryExamination of the toad urinary bladder by freeze-fracture electron microscopy reveals that the mitochondria-rich cells of the epithelium possess distinctive and characteristic membrane structural specialization. Unique rod-shaped intramembrane particles are found in luminal and basal membranes as well as certain intracellular vesicles of this cell type. The consistent finding of two discrete patterns of luminal membrane structural organization supports the possibility that two morphological forms of mitochondria-rich cell exist within the toad bladder epithelium.