About the Authors
Department of Cell Biology, Physiology, and Immunology, Bioscience School, Universitat Autònoma de Barcelona, Bellaterra, Spain
The authors have declared that no competing interests exist.
Conceived and designed the experiments: LT AG. Performed the experiments: JP. Analyzed the data: LT JP. Wrote the paper: LT AG JP CF. Generated the HMEC-hTERT stable cell lines: CF.