General Neurology
Thoracic disc prolapse
Jan. 21, 2024
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Toll Free (U.S. + Canada): 800-452-2400
US Number: +1-619-640-4660
Support: service@medlink.com
Editor: editor@medlink.com
ISSN: 2831-9125
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(A to C) NADH-TR of several different fascicles shows that all small fibers are type I and all large fibers are type II, but some fascicles are composed nearly entirely of small type I fibers. ATPase stains (not shown) confirmed a similar histochemical pattern of fiber types. Serial muscle biopsies of children with congenital muscle fiber-type disproportion frequently show a greater number of type I fibers at older ages than in infancy, as in this case, presumably due to continued conversion over time of some type II fibers to type I. Magnification x 250. (Contributed by Dr. Harvey Sarnat.)