EurekAlert -- A research team from McGill University (Canada) report a beneficial effect on cardiac function in mouse models when implanted monocytes - a type of white blood cell that is part of the immune system - helped preserve cardiac function following a heart attack (myocardial infarction). Their study, published in the current issue of Cell Transplantation (19:4), is now freely available on-line at http://www.ingentaconnect.com/content/cog/ct/.