Zhang F, Michaelson JE, Moshiach S, et al. Tetraspanin CD151 maintains vascular stability by balancing the forces of cell adhesion and cytoskeletal tension. Blood. 2011;118(15):4274-4284.

On page 4278 in the 13 October 2011 issue, there is an error in Figure 2B. An error in the traction-force coding resulted in reported traction forces being low by a factor of 2 × π. This correction is applied to all traction forces, so all comparisons made in this figure or in the article remain correct and statistically significant. The error does not affect any of the conclusions.