| 词汇 | pedicle |
| 释义 | pedicle noun[ C ] medical specializeduk /ˈped.ɪ.kəl/ us /ˈped.ɪ.kəl/ a narrow tube or strip of tissue: 梗，茎，蒂 a pedicle graft蒂状移植片 Substances & structures in the body abductor accessorius ACL actin adductor fundus funiculus fusiform glomerular glomerulus myosin navicular neuroendocrine neurohormonal neurohormone tendinous tendinum tendo tensor Th Examples of pediclepedicle Thus, we focused on tracing labeled dendrites through serial sections using electron microscopy to determine their precise ultrastructural localization beneath the cone pedicle. The peripheral cone pedicle thus can accommodate 84 horizontal cell terminals (two lateral elements per ribbon). All of the contacts made by cone pedicles onto outer diffuse bipolar cells are also basal and symmetrically dense. The quantification only included processes in the immediate postsynaptic region, either within the invagination proper or abutting the pedicle membrane in basal positions. The density of outer diffuse bipolar cells, 23,327 cells mm 2, was only slightly smaller (88%) than the density of cone pedicles. By contrast, the density of inner diffuse bipolar cells, 10,514 cells mm 2, was much smaller, just 40% of the density of cone pedicles. The dendrites bore aggregates of terminals contacting the cone pedicles. When a perforating vessel is found, it is dissected away from the surrounding muscle and traced to its origin from the vascular pedicle. Labeled fingers were scored as such only when continuity with the pedicle cytoplasm was confirmed in two or more consecutive sections. In the outer plexiform layer, it is mainly correlated with the location of the cone pedicles. Their contacts show asymmetrically dense membranes, which are denser on the cone pedicle side than on the bipolar side. Several stained processes were also found at the base of the cone invagination (11 pedicles), but none of them was associated with the synaptic ribbons. In cone pedicles, multiple invaginations form, each containing a similar triadic configuration. There is strong syntaxin-4 immunolabeling underneath cone pedicles in presumed horizontal cell processes, consistent with the observations made at the light microscopic level. The scales are rhombic, with a presumably subcentral pedicle. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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