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Science 26 September 1997:
Vol. 277. no. 5334, p. 1901
DOI: 10.1126/science.277.5334.1901q
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Damage to the spinal cord is particularly serious because the axons damaged normally do not rebuild their connections. Li et al. have found that, by transplanting olfactory ensheathing cells into the site of a spinal cord lesion, the spinal cord axons can be encouraged to regenerate. For the very specific motor skill tested in these rats, such regeneration correlated with recovery of the motor skill. This holds some promise for lesions of the human spinal cord, but caution is in order, as those lesions are not often of the transection type tested here.

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