This article refers to:
Volume 26, no. 24, p. 9268-9278, 2006. Page 9270, column 1, lines 35-40: The 83-mer sequences used to generate Cripto 1 and 2 short hairpin RNA vectors should read “5′-CTGTCTAGACAAAAACAATGACTCTGAATTAAAGTCTCTTGAACTTTAATTCAGAGTCATTGCGGGGATCTGTGGTCTCATACA-3′” and “5′-CTGTCTAGACAAAAACTACAATGTCCTAACTGAATCTCTTGAATTCAGTTAGGACATTGTAGCGGGGATCTGTGGTCTCATACA-3′,” respectively.