Fiber

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Related to myelinated fiber: myelin sheath

Fiber

A slang term for the euro-U.S. dollar exchange rate.
References in periodicals archive ?
Myelinated fibers were identified by focal clusters of [Na.sup.+] channels at the nodes of Ranvier (Fig.
On average, 950 myelinated fiber profiles, 3300 points hitting the fibers and 1500 points hitting the myelin sheaths were counted per rat hemisphere.
Thirty days after SCI rats were anesthetized with chloral hydrate and intracardiacally perfused with 4% paraformaldehyde (PFA, Sigma-Aldrich) in phosphate-buffered saline (PBS, pH 7.4) for routine histology and 4% PFA with 0.2% glutaraldehyde in PBS for evaluation of spared myelinated fibers and electron microscopy (4[degrees]C).
The main neuropathological change in this cohort of AD-CMT1A is loss of myelinated fiber which is a result of apoptosis of Schwann cells because of overexpressed PMP22, with Schwann cell proliferation forming onion bulbs and demyelination.
All EOLa and citral concentrations used preferentially affected the second CAP component, indicating a major preference of EOLa and citral for small diameter myelinated fibers.
The reasoning behind this interpretation is that FA should be the largest in regions where strongly myelinated fiber tracts run in parallel, permitting free diffusion along, but preventing diffusion perpendicular to, the fibers.
The present study aims to investigate and systematize the morphoquantitative parameters of the sciatic nerves, including the number of fascicles, nerve area, minimum diameter of fascicles, number and density of myelinated fibers, minimum diameter of the myelinated fiber and respective axons, myelin sheath area, fiber distribution histograms, relation between axon diameter and myelin area, and capillary number and area.
Fascicle morphometry data (fascicular area and diameter, myelinated fiber number and density, Schwann cell nuclei number and density and percentage of occupancy of the myelinated fibers) is shown in Table I.
Also, myelinated fiber number is larger on proximal segments, on both sides and groups.
Nevertheless, myelinated fiber number and density were significantly larger on females.
Mean myelinated fiber number on control nerves was 19 [+ or -] 4 while for the diabetic it was 8 [+ or -] 2, being this difference statistically significant.