Reference Terms
from Wikipedia, the free encyclopedia
Spinal muscular atrophy
Spinal Muscular Atrophy (SMA) is a term applied to a number of different disorders, all having in common a genetic cause and the manifestation of weakness due to loss of the motor neurons of the spinal cord and brainstem.
Note: The above text is excerpted from the Wikipedia article "Spinal muscular atrophy", which has been released under the GNU Free Documentation License.
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