DEVELOPMENTAL BIOLOGY, ENGINEERING Correction for “Neural tube morphogenesis in synthetic 3D microenvironments,” by Adrian Ranga, Mehmet Girgin, Andrea Meinhardt, Dominic Eberle, Massimiliano Caiazzo, Elly M. Tanaka, and Matthias P. Lutolf, which appeared in issue 44, November 1, 2016, of Proc Natl Acad Sci USA (113:E6831–E6839; first published October 14, 2016; 10.1073/pnas.1603529113).
The authors note that on page E6839, left column, the first full paragraph, starting with “The differentiation medium”, appeared incorrectly. It should instead appear as: “The differentiation medium consisted of 1/2 vol of Neurobasal (Life Technologies), 1/2 vol of DMEM-F12 (Life Technologies), 0.5× N2 supplement (Life Technologies), 0.5× B27 supplement (Life Technologies), 100 U/mL penicillin/streptomycin (Life Technologies), 1 mM sodium pyruvate (Life Technologies), 1× nonessential amino acids (Life Technologies), and 0.1 mM β-mercaptoethanol (Sigma-Aldrich).”