Research by contemporary neuroscientists has shown that:
A)no new central nervous system cells are produced after infancy.
B)neurons in the central nervous system cannot regenerate and grow back.
C)precursor cells can replace damaged cells in a human spinal cord,thus restoring use of limbs.
D)severed spinal-cord axons in an animal regrow if treated with certain nervous-system chemicals.

Question

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The Answer of Research by contemporary neuroscientists has shown that:
A)no new central nervous system cells are produced after infancy.
B)neurons in the central nervous system cannot regenerate and grow back.
C)precursor cells can replace damaged cells in a human spinal cord,thus restoring use of limbs.
D)severed spinal-cord axons in an animal regrow if treated with certain nervous-system chemicals.

Research by Contemporary Neuroscientists Has Shown That