Gérard Morel, Ph.D., D.Sc., is a research director at the National Center of Scientific Research (CNRS), at University Claude Bernard-Lyon 1, Villeurbanne, France. Mireille Raccurt, Ph.D., is an engineer in biology in a laboratory of the CNRS (Molecular Physiology), at Claude Bernard-Lyon 1 University, Villeurbanne, France.