Nature 441, 1097–1099 (2006)

It has been drawn to our attention (by J. Lakota, and by J. J. Minguell and G. P. Lasala) that we used the abbreviation for bone-marrow-derived stem cells (BMSCs) inappropriately in some parts of our Insight Progress article. BMSC is a commonly used acronym for the heterogeneous adult stem cells in bone marrow. The term BMSC was used with this intention, but was placed after describing a study on bone-marrow-derived mesenchymal stem cells, which are a subset of BMSCs. Subsequent references to BMSCs were intended to describe the heterogeneous cells, rather than the specific mesenchymal subtype. Most clinical trials for myocardial infarction used BMSCs and have so far had mixed results. Future trials with isolated mesenchymal stem cells will reveal their potential in the context of heart disease.