Volume 78, no. 3, p.1243-1255, 2004. Page 1245: Figure 1C should appear as shown below.
Page 1245, legend to Fig. 1. Line 7: “lanes 2, 5, and 10” should read “lanes 2, 6, and 10.” Line 8: “lanes 4, 7, and 12” should read “lanes 4, 8, and 12.” Line 10: “lanes 3, 6, and 11” should read “lanes 3, 7, and 11.”
