In the article on CD44, α2β1, and prostate tumor stem/progenitors in the July 15, 2007 issue of Cancer Research (1), “α2β11” in Table 2 should have appeared as “α2β1”.

1
Patrawala L, Calhoun-Davis T, Schneider-Broussard R, Tang DG. Hierarchical organization of prostate cancer cells in xenograft tumors: the CD44+α2β1+ cell population is enriched in tumor-initiating cells.
Cancer Res
2007
;
67
:
6796
–805.