In the Original Article by Tanaka et al titled “A Replication-Selective Adenoviral Vector for Head and Neck Cancers,” published in the July issue of the Archives (2005;131:630-634), an error occurred on page 633 in Figure 3B. In that figure, the lines connecting the data points were inadvertently omitted. The entire correct Figure 3 is reprinted here with its legend. The journal regrets the error.