Cancer stem cells in solid tumours: accumulating evidence and unresolved questions

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Funding Acknowledgements

We sincerely apologize to those authors whose papers we could not cite owing to space constraints. We are grateful to J. Adams for discussions and P. Maltezos for expert help with the figures. This work was supported by the Victorian Breast Cancer Research Consortium and the National Health and Medical Research Council (Australia). We also acknowledge support from the National Breast Cancer Foundation (Australia), the Susan G. Komen Breast Cancer Foundation, the US Department of Defense, the Australian Stem Cell Centre and the Australian Cancer Research Foundation.