Ground bundles --> fasciculi proprii
flechsigs fasciculi or ground bundles (f. Anterior proprius and fasciculus lateralis proprius or lateral ground bundle); intersegmental fasciculi; ascending and descending association fibre systems of the spinal cord which lie deep in the anterior, lateral, and posterior funiculi adjacent to the gray matter.
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... He wanted to know whether they might survive exposure to pepper, so he ground up some and added it to a sample. The number of animalcules waxed ... with the work of Paul Metzner, who described the motion of flagellar bundles of S. volutans in stunning detail.15 S. volutans has two flagellar ...
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