Correction for Romero et al., Extensive Sprouting of Sensory Afferents and Hyperalgesia Induced by Conditional Expression of Nerve Growth Factor in the Adult Spinal Cord

In the article “Extensive Sprouting of Sensory Afferents and Hyperalgesia Induced by Conditional Expression of Nerve Growth Factor in the Adult Spinal Cord,” by Mario I. Romero, Nagarathnamma Rangappa, Li Li, Ellis Lightfoot, Mary G. Garry, and George M. Smith, which appeared on pages 4435–4445 of the June 15, 2000 issue, SDs were erroneously reported in Results in nanogram quantities instead of picograms. Corrected amounts are as follows: “In the spinal cord of noninjected animals, NGF was measured at a concentration of 0.517 ± 0.011 ng/mg protein. This level did not statistically differ after the injection of the control adenovirus (LacZ, 0.608 ± 0.069 ng/mg); however, injection of either FGF-2/Adts or NGF/Adts resulted in an increase in the concentration of NGF by 190% (0.981 ± 0.212 ng/ml protein; p > 0.05) and 938% (4.85 ± 0.626 ng/mg protein; p > 0.001), respectively.”