Luxol fast blue stain
Luxol fast blue stain, abbreviated LFB stain or simply LFB, is a commonly used stain to observe myelin under light microscopy, created by Heinrich Klüver and Elizabeth Barrera in 1953. LFB is commonly used to detect demyelination in the central nervous system (CNS), but cannot discern myelination in the peripheral nervous system.
Under the stain, myelin fibers appear blue, neuropil appears pink, and nerve cells appear purple. Tissues sections are treated over an extended period of time (usually overnight) and then differentiated with a lithium carbonate solution.
The combination of LFB with a variety of common staining methods provides the most useful and reliable method for the demonstration of pathological processes in the CNS. It is often combined with H&E stain (hematoxylin and eosin), which is abbreviated H-E-LFB, H&E-LFB. Other common staining methods include the periodic acid-Schiff, Oil Red O, phosphotungstic acid, and Holmes silver nitrate method.
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