White matter: A portion of the brain or spinal
cord containing mostly fiber tracts (communicating 'wires')
rather than any nerve cell bodies.
Xenograft:
A graft of tissue from a different species.
X-ray:
An image obtained by shining high-energy electrons through
a tissue.
X-ray
myelogram: An image of the spinal canal obtained
with an X-ray machine after first injecting dye into the spinal
fluid.
Yoga:
An exercise-based treatment in use for thousands of years
for general health and well being. it is also used for the
treatment of some types of spinal pain.
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