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Correlation between growth factor expression in the CSF (normalized OD) at the first visit and the change in the neurological score (neuro score) at the second visit. A significant negative relationship was seen for BDNF, EGF, eotaxin-3, and FGF-6, indicating that low levels of growth factors (BDNF, EGF, FGF-6) or chemokine (eotaxin-3) predicted a subsequent decline in neurological status
