Research by Contemporary Neuroscientists Has Shown That

question 453

Multiple Choice

Research by contemporary neuroscientists has shown that:

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

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