In the version of the article entitled “Galecto Biotech” (Nat. Biotechnol. 31, 481, 2013) originally published, in paragraph 2, “Galectin-3” was said to be “like,” but is “unlike other lectins.” The photo caption should have included Hans Schambye, also a co-founder; and Tariq Sethi's first name was misspelled as Tarik. At the end of the article, Raghu Kalluri's name was misspelled as Khalluri. The errors have been corrected in the HTML and PDF versions of the article.