Alan Lewis, CEO of MediStem Inc., is leading his second company that is working to develop stem-cell based therapies.

Alan Lewis, CEO of MediStem Inc., is leading his second company that is working to develop stem-cell based therapies. Photo by Melissa Jacobs.

San Diego is a beacon nationally for its advances in regenerative medicine and stem cell research, but the field has faltered in its transition from the bench to the bedside...

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