Addendum: A breast cancer stem cell niche supported by juxtacrine signalling from monocytes and macrophages

Nat. Cell Biol. 16, 1105–1117; published online 28 September 2014; corrected online 27 November 2015

The MDA-MB-435 cell line used in Supplementary Fig. 2e–g is found on the list of commonly misidentified cell lines that is maintained by ICLAC and NCBI BioSample, where it is listed as a melanoma cell line misidentified as representing breast cancer. In this Article it was also misidentified and used as a breast cancer model. However, the use of this cell line does not affect the key findings of the paper, given that it was used to demonstrate that CD90^hi cells are more tumorigenic than their CD90^lo counterparts, as a supporting piece of data in addition to characterizing the CD90^hi cell population in HMLE and HMLER (HMLE cells that had been transformed with the H-RasV12 oncogene) cells.