To make sure that the appearance of the band assigned as ALDH1L1 protein in Lee’s paper is not associated with abnormal properties of cells used in the study, or by specificity of a particular antibody, we obtained A549 cells from the same source, the DCTD Tumor Repository, NCI/NIH, and tested them for the presence of ALDH1L1 using an Abcam antibody (cat. The gene discussed is ALDH1L1; the disease is neoplasm.