Correction for Reprogramming of murine and human somatic cells using a single polycistronic vector, by Bryce W. Carey

Correction for ‘‘Icy insights from emperor penguins,’’ by Colleen Cassady St. Clair and Mark S. Boyce, which appeared in issue 6, February 10, 2009, of Proc Natl Acad Sci USA (106:1691–1692; first published February 4, 2009; 10.1073/pnas.0812940106). The authors note that due to a printer’s error in the Fig. 1 legend, the two panels were credited incorrectly. The corrected legend and its figure appear below.

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