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: What is a very small embryonic-like stem cell - or VSEL? A: VSELs are rare stem cells found in adult bone marrow that have the characteristics of embryonic stem cells in terms of their potential to develop into any type of cell in the body. Dr. Mariusz Ratajczak, director of the stem cell biology program at the University of Louisville's James Graham Brown Cancer Center, led a project that has grown mouse VSEL cells in a lab and has caused them to change into nerve, heart and pancreas cells. ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn