 files were not available for assessment in a number of instances and the integrity with which the data were reported in the figure, supporting that the image was selectively enhanced or otherwise manipulated in these areas. Citation: The PLOS Biology Editors remain concerned about the integrity with which the data were reported in the figure, supporting that the image was selectively enhanced or otherwise manipulated in these areas. Citation: The PLOS Biology Editors issue this Expression of concern: A chaperonin subunit with unique structures is 