A correction should be made to the article “Cartilage-Derived Retinoic Acid-Sensitive Protein and Type II Collagen Expression During Fracture Healing are Potential Targets for Sox9 Regulation” by S. Sakano, Y. Shu, and L. J. Sandell published in 15:1891–1901, November 1999. Please note that the photographs for Figure 1 and Figure 4 are reserved. The on-line version of the article reflects this correction. We apologize for this error.